Cita APA (7a ed.)

Watkins, W. P. (1953). Cooperation and housing. [s.n.].

Cita Chicago Style (17a ed.)

Watkins, William Pascoe. Cooperation and Housing. [S.l.]: [s.n.], 1953.

Cita MLA (9a ed.)

Watkins, William Pascoe. Cooperation and Housing. [s.n.], 1953.

Precaución: Estas citas no son 100% exactas.