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Citation

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A citation is a special way to point to a source. A source can be a book, a poem, or a web page. When writers use citations, they show where they found their facts. This helps them be honest about their ideas. It also helps them give credit to other people. Citations are more than just a list of names. They show what we already know about a topic. They can also show what we still need to learn. Some researchers even use them to show if they agree with other experts.

Webcomic xkcd - Wikipedian protester - English
Webcomic xkcd - Wikipedian protester - English

There are many ways to write a citation. One way is the Vancouver system. This system uses small numbers inside the text. These numbers point to notes at the bottom of a page. These are called footnotes. They can also be at the end of a paper as endnotes. Another way is called parenthetical referencing. This is also known as Harvard referencing. It uses names and dates inside circular brackets. These brackets are placed right inside the paragraph. This makes it easy for the reader to see the source.

Webcomic xkcd - Wikipedian protester - English
Webcomic xkcd - Wikipedian protester - English

Different groups of experts use different rules. These rules are called citation styles. The style often depends on the subject being studied. For example, the MLA style is used for the arts and humanities. This includes things like English studies and drama. The APA style is used in other fields. There is also the Chicago style. It is often used for history and economics. Some styles are very flexible. Others have very strict rules about punctuation. These rules tell you where to put commas or dates. They even tell you when to use italics.

Citations often include special codes to help people find things. A book might have an ISBN. This is a unique number for that book. A web document might have a DOI. This is called a digital object identifier. Some scientific papers use a PubMed Identifier, or PMID. These codes make sure you find the exact item. Citations can also include page numbers or dates. For a play, a citation might show the scene and the line. For a poem, it might show which lines are being used. Even an interview can be cited with a date.

Webcomic xkcd - Wikipedian protester - English
Webcomic xkcd - Wikipedian protester - English

Many famous works have their own special ways of citing. People have used different systems for a very long time. For example, people cite the Bible by book and chapter. They use special numbers for the works of Aristotle. Some people use a system called Stephanus pagination for Plato. There is even a special language called CSL. This helps describe how to format citations and bibliographies. Whether it is for science or art, citations help us share knowledge. They connect what we know now to what we will learn later.

Webcomic xkcd - Wikipedian protester - English
Webcomic xkcd - Wikipedian protester - English
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