Dyfyniad APA
Barker, P., & Chang, J. (2013). Basic family therapy (6th ed.). Wiley-Blackwell.
Dyfyniad Arddull Chicago
Barker, Philip, and Jeff Chang. Basic Family Therapy. 6th ed. Chichester, West Sussex, UK ; Hoboken, NJ: Wiley-Blackwell, 2013.
Dyfyniad MLA
Barker, Philip, and Jeff Chang. Basic Family Therapy. 6th ed. Wiley-Blackwell, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.