Allen, A. M., Card, B., Copeland, J. L., Goodfellow, R. C., & Kilduff, E. J. (1939). Manual for Ediphone voice writing and integrated studies. South-western Publishing Co..

Allen, Anna May, Bert Card, John L. Copeland, Raymond Charles Goodfellow, and Edward Jones Kilduff. Manual for Ediphone Voice Writing and Integrated Studies. [S.l.]: South-western Publishing Co., 1939.

Allen, Anna May, et al. Manual for Ediphone Voice Writing and Integrated Studies. South-western Publishing Co., 1939.