Dyfyniad APA

Cooper, P., & Fairburn, C. (1986). The depressive symptoms of bulimia nervosa.

Dyfyniad Arddull Chicago

Cooper, P., and C. Fairburn. The Depressive Symptoms of Bulimia Nervosa. 1986.

Dyfyniad MLA

Cooper, P., and C. Fairburn. The Depressive Symptoms of Bulimia Nervosa. 1986.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.