Citazione APA

Willoughby, W. W. (1910). The rights and duties of American citizenship. American Book Co..

Stile di citazione Chicago

Willoughby, Westel Woodbury. The Rights and Duties of American Citizenship. New York : Cincinnati [etc.]: American Book Co., 1910.

Citazione MLA

Willoughby, Westel Woodbury. The Rights and Duties of American Citizenship. American Book Co., 1910.