APA (7th ed.) Citation

Kraus, R., Stricker, G., & Speyer, C. Online counselling: A handbook for mental health professionals (2nd ed.).

Chicago Style (17th ed.) Citation

Kraus, Ron, George Stricker, and Cedric Speyer. Online Counselling: A Handbook for Mental Health Professionals. 2nd ed.

MLA (8th ed.) Citation

Kraus, Ron, et al. Online Counselling: A Handbook for Mental Health Professionals. 2nd ed.