Cita APA (7a ed.)

Gregory, J., & Horrabin, J. (1946). Land of the Soviets. New York: Penguin.

Cita Chicago Style (17a ed.)

Gregory, J.S, y J.F Horrabin. Land of the Soviets. New York: Penguin, 1946.

Cita MLA (8a ed.)

Gregory, J.S, y J.F Horrabin. Land of the Soviets. New York: Penguin, 1946.