APA (7th ed.) Citation

Cocker, M. P. (1982). Observer's directory of Royal Naval submarines, 1901 - 1982 (1. publ.). Warne.

Chicago Style (17th ed.) Citation

Cocker, Maurice P. Observer's Directory of Royal Naval Submarines, 1901 - 1982. 1. publ. London: Warne, 1982.

MLA (9th ed.) Citation

Cocker, Maurice P. Observer's Directory of Royal Naval Submarines, 1901 - 1982. 1. publ. Warne, 1982.