APA (7th ed.) Citation

Harrar, W. R., VandeCreek, L., & Knapp, S. (1990). Ethical and legal aspects of clinical supervision. Professional psychology, 21(1), 37-41.

Chicago Style (17th ed.) Citation

Harrar, William R., Leon VandeCreek, and Samuel Knapp. "Ethical and Legal Aspects of Clinical Supervision." Professional Psychology 21, no. 1 (1990): 37-41.

MLA (9th ed.) Citation

Harrar, William R., et al. "Ethical and Legal Aspects of Clinical Supervision." Professional Psychology, vol. 21, no. 1, 1990, pp. 37-41.