APA (7th ed.) Citation

(1929). Engineer headquarters, communications zone section; effective July 1, 1930. GPO.

Chicago Style (17th ed.) Citation

Engineer Headquarters, Communications Zone Section; Effective July 1, 1930. [Washington]: GPO, 1929.

MLA (9th ed.) Citation

Engineer Headquarters, Communications Zone Section; Effective July 1, 1930. GPO, 1929.

Warning: These citations may not always be 100% accurate.