Dyfyniad APA
Barker, P. (2007). Basic family therapy (5th ed.). Blackwell Publishing.
Dyfyniad Arddull Chicago
Barker, Philip. Basic Family Therapy. 5th ed. Oxford: Blackwell Publishing, 2007.
Dyfyniad MLA
Barker, Philip. Basic Family Therapy. 5th ed. Blackwell Publishing, 2007.
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