Nepedia
Back to Discover
Advanced Reader
📖

Style guide

language culture Maturity 5-7 Next article →

A style guide is a collection of standards for writing, formatting, and design.

These guides exist to improve communication by ensuring consistency. Consistency means that different documents look and feel like they belong together. When writing follows the same rules, it becomes easier for people to understand. A very long style guide is often called a style manual or a manual of style. A shorter version, which might be only a few dozen pages, is called a style sheet.

Style guides work by setting specific requirements for many different tasks. They establish rules for orthography, which is the conventional spelling system of a language. They also provide standards for punctuation, capitalization, and the way numbers or dates are formatted. In technical or academic writing, these guides go much deeper. They might enforce rules for citing sources or following research ethics. They can even regulate disclosure and regulatory compliance. For translators, a guide ensures that grammar, tone, and localization decisions remain the same. Localization involves making sure units of measure and other details fit the local culture.

There are three main categories of style guides. The first type is comprehensive style, which is meant for general use. The second type is discipline style, which is specialized for specific fields. This includes areas like medicine, journalism, law, government, or business. The third type is house or corporate style. This is a custom set of rules created by a specific publisher or organization.

These different types of guides often work together through a process called cascading. This is similar to how CSS styles work in web development. A specific project, like a single book, might use a short style sheet. That style sheet cascades over the larger house style of a publishing company. The house style then cascades over a broader industry-wide style manual. Finally, all these rules rest upon the general orthographic norms of a language. These norms can change based on national varieties, such as British or American English.

Many famous and authoritative style guides exist for different professions. Journalists often use the Associated Press Stylebook (AP Stylebook) or The Canadian Press Stylebook. In the humanities and social sciences, researchers use the Modern Humanities Research Association (MHRA) style or the American Sociological Association (ASA) style. Legal professionals rely on the Oxford Standard for Citation of Legal Authorities (OSCOLA) or the Bluebook style. For government work, people might use the US Government Publishing Office (USGPO) style.

Style guides also adapt to new technology and social needs. Web style guides focus on the user experience for digital environments. They cover technical aspects, typography, and graphics. They also prioritize accessibility for audience members with visual or mobility disabilities. Some guides focus on nomenclature, which is the system of names used in science. This helps keep labels for things like chemicals or genes clear and standardized. Additionally, some guides suggest descriptive terms to help writers avoid racism, sexism, or homophobia.

Because language and technology change, style guides must be updated periodically. The frequency of these updates depends on the subject matter. Reference-style manuals are revised every one to 20 years. For example, the AP Stylebook has been revised every other year since 2020. The Chicago Manual of Style is currently in its 18th edition. As of 2025, the American Psychological Association (APA) and the ASA styles are both in their 7th editions.

House styles and individual project styles often change even more frequently to meet new needs.

574 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

More to explore

🔬 Go deeper

More advanced topics to explore

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.