APA (7th ed.) Zitazioa
Cooper, M. (2003). Existential therapies. Sage Publications.
Chicago Style (17th ed.) Zitazioa
Cooper, Mick. Existential Therapies. London ; Thousand Oaks, Calif.: Sage Publications, 2003.
MLA (9th ed.) Zitazioa
Cooper, Mick. Existential Therapies. Sage Publications, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.