Dyfyniad APA

(1974). Government reference books 72/73: A biennial guide to U.S. Government Publications (3d biennial ed.). Libraries Unlimited, Inc.

Dyfyniad Arddull Chicago

Government Reference Books 72/73: A Biennial Guide to U.S. Government Publications. 3d biennial ed. Littleton, Colo: Libraries Unlimited, Inc, 1974.

Dyfyniad MLA

Government Reference Books 72/73: A Biennial Guide to U.S. Government Publications. 3d biennial ed. Libraries Unlimited, Inc, 1974.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.