Cita APA (7th ed.)

Erdman, P. E. (1982). The last days of America. Sphere Books Limited.

Cita Chicago (17th ed.)

Erdman, Paul Emil. The Last Days of America. Londres: Sphere Books Limited, 1982.

Cita MLA (9th ed.)

Erdman, Paul Emil. The Last Days of America. Sphere Books Limited, 1982.