APA استشهاد

Langdridge, D., Barker, M., & Vossler, A. (2010). Understanding counselling and psychotherapy. SAGE ; In association with The Open University.

استشهاد بنمط شيكاغو

Langdridge, Darren, Meg Barker, و Andreas Vossler. Understanding Counselling and Psychotherapy. London ; Thousand Oaks, Calif. : Milton Keynes [England]: SAGE ; In association with The Open University, 2010.

MLA استشهاد

Langdridge, Darren, et al. Understanding Counselling and Psychotherapy. SAGE ; In association with The Open University, 2010.