APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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