APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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