APA-viite (7. p.)
Barker, P. (2007). Basic family therapy (5th ed.). Blackwell Publishing.
Chicago-viite (17. p.)
Barker, Philip. Basic Family Therapy. 5th ed. Oxford: Blackwell Publishing, 2007.
MLA-viite (9. p.)
Barker, Philip. Basic Family Therapy. 5th ed. Blackwell Publishing, 2007.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.