Dyfyniad APA

Nolen-Hoeksema, S. (2007). Abnormal psychology (4th edition.). McGraw-Hill Higher Education.

Dyfyniad Arddull Chicago

Nolen-Hoeksema, Susan. Abnormal Psychology. 4th edition. New York: McGraw-Hill Higher Education, 2007.

Dyfyniad MLA

Nolen-Hoeksema, Susan. Abnormal Psychology. 4th edition. McGraw-Hill Higher Education, 2007.

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