General Rules for Language (required) for Entire Books Vancouver Style

Give the language of publication if not English.

Capitalize the language name.

Follow the language name with a period.

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Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers [Internet]. 2nd edition. Chapter 2: Books

Related:

General Rules for Language (required) for Entire Books Vancouver Style

Specific Rules for Language (required) for Entire Books Vancouver Style: Books appearing in more than one language

Examples for Language (required) for Entire Books Vancouver Style (2015/09/02)