Cita APA (7th ed.)
Arnspiger, W. C. (1972). Measuring the effectiveness of sound pictures as teaching aids.
Cita Chicago (17th ed.)
Arnspiger, Warney Clyde. Measuring the Effectiveness of Sound Pictures as Teaching Aids. 1972.
Cita MLA (9th ed.)
Arnspiger, Warney Clyde. Measuring the Effectiveness of Sound Pictures as Teaching Aids. 1972.
Atenció: Aquestes cites poden no estar 100% correctes.