APA (7th ed.) Citation

Pound, A. (1926). The telephone idea; fifty years after. Greenberg.

Chicago Style (17th ed.) Citation

Pound, Arthur. The Telephone Idea; Fifty Years After. New York: Greenberg, 1926.

MLA (9th ed.) Citation

Pound, Arthur. The Telephone Idea; Fifty Years After. Greenberg, 1926.