Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.