Gaya APA
Gambrill, E, D. (1977).
Behavior Modification : Handbook of Assessment, Intervention, and Evaluation .
San Fransisco:
Jossey-Bass.
Gaya MLA
Gambrill, Eileen, D..
"Behavior Modification : Handbook of Assessment, Intervention, and Evaluation".
San Fransisco:
Jossey-Bass,
1977.
Text.