APA (7th ed.) Citation

Nilson, A. R. (1942). Radio code manual: Twenty lessons on the radio code and selected projects on code-learning equipment. McGraw-Hill Book Company, inc..

Chicago Style (17th ed.) Citation

Nilson, Arthur Reinhold. Radio Code Manual: Twenty Lessons on the Radio Code and Selected Projects on Code-learning Equipment. New York, London: McGraw-Hill Book Company, inc., 1942.

MLA (9th ed.) Citation

Nilson, Arthur Reinhold. Radio Code Manual: Twenty Lessons on the Radio Code and Selected Projects on Code-learning Equipment. McGraw-Hill Book Company, inc., 1942.