Corsini, Raymond J., author
Brunner-Routledge, 2002
Buku Teks
Corsini, Raymond J., author
Brunner-Routledge, 2002
Buku Referensi
Chaplin, J. P., author
RajaGrafindo Persada, 2006
Buku Referensi
Sitanggang, A. R. Henry, author
Armico, 1994
Buku Teks
Indigo Books, 2005
Buku Referensi