APA
Ramsden P., . (2013). Understanding abnormal psychology, 9th ed. [Place of publication not identified]: SAGE Publications Inc.
Chicago
Ramsden Pamilla, . 2013. Understanding abnormal psychology, 9th ed. [Place of publication not identified]: SAGE Publications Inc.
Harvard
Ramsden P., . (2013). Understanding abnormal psychology, 9th ed. [Place of publication not identified]: SAGE Publications Inc.
MLA
Ramsden Pamilla, . Understanding abnormal psychology, 9th ed. [Place of publication not identified]: SAGE Publications Inc. 2013.