General Rules for Volume Number (required) for Entire Journal Titles Vancouver Style

Precede the number with "Vol.", regardless of the particular word for volume used by the journal.

Use arabic numbers only. For example: convert LX or Sixtieth to 60.

Separate multiple volumes by a hyphen. For example: 5-6 or 42-43.

Follow volume number(s) with a comma.

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Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers [Internet]. 2nd edition. Chapter 1: Journals

Related:

General Rules for Volume Number (required) for Entire Journal Titles Vancouver Style

Specific Rules #1 for Volume Number (required) for Entire Journal Titles Vancouver Style: Non-English names for volume

Specific Rules #2 for Volume Number (required) for Entire Journal Titles Vancouver Style: No volume number can be found

Examples for Volume Number (required) for Entire Journal Titles Vancouver Style