LibGuides: AMA Help (11th Edition): When Author/Title/Date is Missing

Articles With No Author

AMA Manual of Style (AMA, 2020, pg. 67).

Other Material Without Named Author(s) or With Named Authors and a Group Name

Reference may be made to material that has no named author or is prepared by a committee or other group. The following forms are used:

AMA Manual of Style (AMA, 2020, pg. 66).

Year of Publication

If the book has been published but there is no year of publication available, use "date unknown" in place of the year. Use the full year (eg, 2006), not an abbreviated form (eg, not 06 or '06).