APA

Beard C. A., Beard M. R., . (1930). The rise of American civilization. New York: Macmillan.

Chicago

Beard Charles Austin, Beard Mary Ritter, . 1930. The rise of American civilization. New York: Macmillan.

Harvard

Beard C. A., Beard M. R., . (1930). The rise of American civilization. New York: Macmillan.

MLA

Beard Charles Austin, Beard Mary Ritter, . The rise of American civilization. New York: Macmillan. 1930.