Cita APA (7a ed.)

Socknat, T. P., & Brock, P. (1999). Challenge to Mars: Pacifism from 1918 to 1945. University of Toronto Press.

Cita Chicago Style (17a ed.)

Socknat, Thomas Paul, y Peter Brock. Challenge to Mars: Pacifism from 1918 to 1945. Toronto, Ont.: University of Toronto Press, 1999.

Cita MLA (8a ed.)

Socknat, Thomas Paul, y Peter Brock. Challenge to Mars: Pacifism from 1918 to 1945. University of Toronto Press, 1999.