Cita APA (7a ed.)

Knapp, S., VandeCreek, L., & Fingerhut, R. (2017). Practical ethics for psychologists: A positive approach (3rd edition.).

Cita Chicago Style (17a ed.)

Knapp, Samuel, Leon VandeCreek, y Randy Fingerhut. Practical Ethics for Psychologists: A Positive Approach. 3rd edition. 2017.

Cita MLA (9a ed.)

Knapp, Samuel, et al. Practical Ethics for Psychologists: A Positive Approach. 3rd edition. 2017.