Consumers of a Associations of Penang, 1986
Buku Teks
Lee, Ann, author
Limkokwing Univerity of Creative Technology, 2008
Buku Referensi
Jung, C.G. (Carl Gustav), 1875-1961, author
London, 2003
Buku Teks
Muhammad Gibraltar, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2012
UI - Tesis (Open)
Brown, Paul B., author
Newton Abbot : David & Charles, distributor, 2006
Buku Teks