Simmons, J., & Griffiths, R. CBT for beginners (3rd edition.).
Dyfyniad Arddull ChicagoSimmons, Jane, and Rachel Griffiths. CBT for Beginners. 3rd edition.
Dyfyniad MLASimmons, Jane, and Rachel Griffiths. CBT for Beginners. 3rd edition.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.