APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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