Cita APA

Bock, B., & Bock, K. (1977). soviet bloc merchant ships. Janes publishing Company.

Citación estilo Chicago

Bock, Bruno, y Klaus Bock. Soviet Bloc Merchant Ships. London: Janes publishing Company, 1977.

Cita MLA

Bock, Bruno, y Klaus Bock. Soviet Bloc Merchant Ships. Janes publishing Company, 1977.