APA (7th ed.) Zitazioa
Collins, G. R. (1980). Christian counseling: A comprehensive guide. Word Books..
Chicago Style (17th ed.) Zitazioa
Collins, Gary R. Christian Counseling: A Comprehensive Guide. Texas: Word Books., 1980.
MLA (9th ed.) Zitazioa
Collins, Gary R. Christian Counseling: A Comprehensive Guide. Word Books., 1980.
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