Cita APA (7a ed.)

Holbrook, S. H. (1955). Machines of plenty: Pioneering in american agriculture. Macmillan.

Cita Chicago Style (17a ed.)

Holbrook, Stewart H. Machines of Plenty: Pioneering in American Agriculture. New York: Macmillan, 1955.

Cita MLA (8a ed.)

Holbrook, Stewart H. Machines of Plenty: Pioneering in American Agriculture. Macmillan, 1955.