Widdemer, K. D., Bright, S., Calver, H. N., Coffey, E. R., Crosby, H., Ferree, J. W., . . . Stowell, T. C. (1949). Public Health Education Planning: Public Health Films.

Widdemer, Kenneth D., Sallie Bright, Homer N. Calver, E. R. Coffey, Helen Crosby, John W. Ferree, H. E. Kleinschmidt, T. Spencer Meyer, و Thomas C. Stowell. Public Health Education Planning: Public Health Films. 1949.

Widdemer, Kenneth D., et al. Public Health Education Planning: Public Health Films. 1949.