edited by Ng Chee Yuen and Charla Griffy-Brown
International Development Research Institute, 1999
Buku Referensi
edited by Ng Chee Yuen and Charla Griffy-Brown
International Development Research Institute , 2001
Buku Teks SO
Artikel Jurnal
edited by Lee Poh Onn
Institute of South East Asia Studies, 2013
eBooks
Gonzalez, Andrew B.
Oxford University Press, 1984
Buku Teks SO