Gaya APA
Trull, T, J., Prinstein, M, J. (2013).
Clinical Psychology (8th edition).
United States of America:
Wadsworth Cengage Learning.
Gaya MLA
Trull, Thimothy, J.., Prinstein, Mitchell, J..
"Clinical Psychology".
8th edition
United States of America:
Wadsworth Cengage Learning,
2013.
Text.