Source Information
Use
The 
Source field is used for documenting the contextual information used in defining the term concept and should contain information on the origin of the term.
When you enter a new term, you must either enter the source or create a link to the source before you can save the term. For more information on creating a link to the source, see Creating Links to Source of Term.
Guidelines for Entering Source Information
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Leave an empty line between each example.
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Translators do not need to translate source information into their respective languages. If you choose not to do so, leave the Source field empty. Do not insert a copy of the untranslated source information, and do not refer back to it (such as "see the German source information").
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Enter a sample text from an internal publication or another source showing how the term is used. Do not enter more than one or two sentences.
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Enter standard bibliographic citation formats for books, trade journals, and other external publications in full after the sample text.