APA aipamena

Weaver, R. B., & Hill, H. C. (1933). United States history by units. W.F. Quarrie.

Chicago Style aipamena

Weaver, Robert B., and Howard C. Hill. United States History by Units. Chicago: W.F. Quarrie, 1933.

MLA aipamena

Weaver, Robert B., and Howard C. Hill. United States History by Units. W.F. Quarrie, 1933.