Cita APA (7a ed.)

González, R. (1938). Cooperation in Spain today. [s.n.].

Cita Chicago Style (17a ed.)

González, Regino. Cooperation in Spain Today. [S.l.]: [s.n.], 1938.

Cita MLA (9a ed.)

González, Regino. Cooperation in Spain Today. [s.n.], 1938.