APA-referens

(1973). Statistical Abstract of the United State 1973. Department of Commerce.

Chicago-stil citat

Statistical Abstract of the United State 1973. Washington, D.C: Department of Commerce, 1973.

MLA-referens

Statistical Abstract of the United State 1973. Department of Commerce, 1973.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.