APA (7th ed.) Citation

Dilts, M. M. (1941). The telephone in a changing world ([1st ed.].). Longmans, Green.

Chicago Style (17th ed.) Citation

Dilts, Marion May. The Telephone in a Changing World. [1st ed.]. New York: Longmans, Green, 1941.

MLA (9th ed.) Citation

Dilts, Marion May. The Telephone in a Changing World. [1st ed.]. Longmans, Green, 1941.