Corey, Gerald, author
Brooks/Cole , 2013
Buku Teks
Nelson-Jones, Richard, author
Thousand Oaks, California: SAGE, 2014
Buku Teks
Herr, Edwin L.
American counseling Association, 1998
Buku Teks
Lapworth, Phil, author
Sage Publications, 2004
Buku Teks
Andi Mappiare A.T., author
RajaGrafindo Persada, 2004
Buku Teks