APA-Zitierstil (7. Ausg.)

(1973). A directory of information resources in the United States: Social sciences (Rev. ed.). Library of Congress.

Chicago-Zitierstil (17. Ausg.)

A Directory of Information Resources in the United States: Social Sciences. Rev. ed. Washington: Library of Congress, 1973.

MLA-Zitierstil (9. Ausg.)

A Directory of Information Resources in the United States: Social Sciences. Rev. ed. Library of Congress, 1973.