Citazione APA

Rugg, H. O. (1926). The mechanical conquest of America (2d experimental ed.). [s.n.].

Stile di citazione Chicago

Rugg, Harold Ordway. The Mechanical Conquest of America. 2d experimental ed. New York: [s.n.], 1926.

Citazione MLA

Rugg, Harold Ordway. The Mechanical Conquest of America. 2d experimental ed. [s.n.], 1926.