APA (7th ed.) Citation

Davidson, R. L. (1969). Audiovisual machines (2d ed.). International Textbook Co..

Chicago Style (17th ed.) Citation

Davidson, Raymond L. Audiovisual Machines. 2d ed. Scranton, Pa.: International Textbook Co., 1969.

MLA (9th ed.) Citation

Davidson, Raymond L. Audiovisual Machines. 2d ed. International Textbook Co., 1969.