Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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