APA (7th ed.) Citation

ScienceDirect (Online service), Upper, D., & Cautela, J. R. (1979). Covert conditioning. Pergamon Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Dennis Upper, and Joseph R. Cautela. Covert Conditioning. New York: Pergamon Press, 1979.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Covert Conditioning. Pergamon Press, 1979.