Gaya APA
Sperry, Len. (1975).
Developing Skills In Contact Counseling .
California:
Addison-Wesley Publishing Company.
Gaya Chicago
Sperry, Len.
Developing Skills In Contact Counseling.
California:
Addison-Wesley Publishing Company,
1975.
Text.
Gaya MLA
Sperry, Len.
Developing Skills In Contact Counseling.
California:
Addison-Wesley Publishing Company,
1975.
Text.
Gaya Turabian
Sperry, Len.
Developing Skills In Contact Counseling.
California:
Addison-Wesley Publishing Company,
1975.
Print.