Cita APA (7th ed.)

London Centre for Psychotherapy, ebrary, Inc, & Bishop, B. (2002). Challenges to practice. Karnac.

Cita Chicago (17th ed.)

London Centre for Psychotherapy, Inc ebrary, i Bernardine Bishop. Challenges to Practice. London ; New York: Karnac, 2002.

Cita MLA (9th ed.)

London Centre for Psychotherapy, et al. Challenges to Practice. Karnac, 2002.