Gaya APA

Schaefer, H, H. (1975). Behavioral therapy / Halmuth H. Schaefer, Patrick L. Martin . : McGraw-Hill.

Gaya MLA

Schaefer, Halmuth, H.. "Behavioral therapy / Halmuth H. Schaefer, Patrick L. Martin". : McGraw-Hill, 1975. Referensi.