APA aipamena

Langdridge,Darren. (2013). Existential counselling & psychotherapy. Sage.

Chicago Style aipamena

Langdridge,Darren. Existential Counselling & Psychotherapy. London: Sage, 2013.

MLA aipamena

Langdridge,Darren. Existential Counselling & Psychotherapy. Sage, 2013.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.