General Rules for Date of Publication (required) to Citing Entire Reports Vancouver Style

Always give the year of publication.

Convert roman numerals to arabic numbers. For example: MM to 2000.

Include the month of publication, if desired, after the year, such as 2004 May.

Use English names for months and abbreviate them to the first three letters, such as Jan.

End date information with a period.

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Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers [Internet]. 2nd edition. Chapter 4: Scientific and Technical Reports