Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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