Cita APA (7a ed.)

O'Hanlon, B., & Bertolino, B. (2011). The therapist's notebook on positive psychology: Activities, exercises, and handouts. Routledge.

Cita Chicago Style (17a ed.)

O'Hanlon, Bill, y Bob Bertolino. The Therapist's Notebook on Positive Psychology: Activities, Exercises, and Handouts. New York [etc.]: Routledge, 2011.

Cita MLA (9a ed.)

O'Hanlon, Bill, y Bob Bertolino. The Therapist's Notebook on Positive Psychology: Activities, Exercises, and Handouts. Routledge, 2011.