Gaya APA
Walker, C, E. et al
(1982).
Clinical procedures for behavior therapy
.
Bandung:
Prentice-Hall.
Gaya MLA
Walker, C., Eugene. et al.
"Clinical procedures for behavior therapy".
Bandung:
Prentice-Hall,
1982.
Hibah Buku Dra. Anita Lestari,.