APA (7th ed.) Citation

Leif, J., Delay, J., & Guillarmé, J. (1968). Psychologie et éducation. Fernand Nathan.

Chicago Style (17th ed.) Citation

Leif, Joseph, Jean Delay, and Jean-Jacques Guillarmé. Psychologie Et éducation. Paris: Fernand Nathan, 1968.

MLA (8th ed.) Citation

Leif, Joseph, et al. Psychologie Et éducation. Fernand Nathan, 1968.

Warning: These citations may not always be 100% accurate.