APA (7th ed.) Zitazioa

Perkinson, R. R. (1997). Chemical dependency counseling: A pratical guide. Sage.

Chicago Style (17th ed.) Zitazioa

Perkinson, Robert R. Chemical Dependency Counseling: A Pratical Guide. California: Sage, 1997.

MLA (9th ed.) Zitazioa

Perkinson, Robert R. Chemical Dependency Counseling: A Pratical Guide. Sage, 1997.