APA (7th ed.) Citation

Dale, E. (1946). Audio-visual methods in teaching, by Edgar Dale .. The Dryden press.

Chicago Style (17th ed.) Citation

Dale, Edgar. Audio-visual Methods in Teaching, by Edgar Dale .. New York: The Dryden press, 1946.

MLA (9th ed.) Citation

Dale, Edgar. Audio-visual Methods in Teaching, by Edgar Dale .. The Dryden press, 1946.