Cita APA (7th ed.)

Barber, T., & Westland, S. (2011). Thinking therapeutically: Hypnotic skills and strategies explored. Crown House.

Cita Chicago (17th ed.)

Barber, Tom, i Sandra Westland. Thinking Therapeutically: Hypnotic Skills and Strategies Explored. Bancyfelin, Carmarthen, Wales, U.K: Crown House, 2011.

Cita MLA (9th ed.)

Barber, Tom, i Sandra Westland. Thinking Therapeutically: Hypnotic Skills and Strategies Explored. Crown House, 2011.