Gaya APA
Pfeiffer, J, W., Jones, J, E. (1979).
The 1978 Annual Handbook for Group Facilitators .
California:
University Asosiate.
Gaya MLA
Pfeiffer, J., William., Jones, John, E..
"The 1978 Annual Handbook for Group Facilitators".
California:
University Asosiate,
1979.
Text.