Vitkus, J. (1999). Casebook in abnormal psychology (4th ed.). Boston: McGraw-Hill College.
Trích dẫn kiểu ChicagoVitkus, John. Casebook in Abnormal Psychology. 4th ed. Boston: McGraw-Hill College, 1999.
Deismireacht MLAVitkus, John. Casebook in Abnormal Psychology. 4th ed. Boston: McGraw-Hill College, 1999.
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