Kee, Poo-Kong
Regional Instute of Higher Education and Development , 1976
Buku Teks
PNMB, 2003
Buku Teks
edited by Tham Siew Yean
Institute of South East Asia Studies, 2013
eBooks
Zaini Ujang, author
Universiti tejnologi Malaysia, 2009
Buku Teks
disunting oleh Hasrom Haron, Roosfa Hashim
Universiti Kebangsaan Malaysia, 2000
Buku Referensi