Cita APA (7a ed.)

Perkins, V. L. (1969). Crisis in agriculture: The Agricultural adjustment administration and the New Deal, 1933. University of California.

Cita Chicago Style (17a ed.)

Perkins, Van L. Crisis in Agriculture: The Agricultural Adjustment Administration and the New Deal, 1933. Berkeley: University of California, 1969.

Cita MLA (9a ed.)

Perkins, Van L. Crisis in Agriculture: The Agricultural Adjustment Administration and the New Deal, 1933. University of California, 1969.