APA (7th ed.) Citation

London Centre for Psychotherapy, ebrary, Inc, & Foster, A. (2006). Difference: An avoided topic in practice. Karnac.

Chicago Style (17th ed.) Citation

London Centre for Psychotherapy, Inc ebrary, and Angela Foster. Difference: An Avoided Topic in Practice. London ; New York: Karnac, 2006.

MLA (9th ed.) Citation

London Centre for Psychotherapy, et al. Difference: An Avoided Topic in Practice. Karnac, 2006.