Cita APA

Raper, A. F. (1955). Guide to agriculture U.S.A. Deaprtment of agriculture.

Citación estilo Chicago

Raper, Arthur F. Guide to Agriculture U.S.A. Washington: Deaprtment of agriculture, 1955.

Cita MLA

Raper, Arthur F. Guide to Agriculture U.S.A. Washington: Deaprtment of agriculture, 1955.