edited by Yip Yat-hoong
Regional Institute of Higer Education and Development, 1973
Buku Teks
Azzhary Muhammad Rio
2017
UI - Skripsi Membership
Kantner, John F.
Lixington Books, 1975
Buku Teks
edited by B. Abdul Rahim Mokhzani
Vikas Publishing House, 1979
Buku Teks SO
edited by Nancy Chng
Select Books, 1977
Buku Teks SO