Mackerras, Malcolm, author
Angus and Roberton, 1972
Buku Teks
edited by Johan Saravanamuttu, Lee Hock Guan, Mohamed Nawab Mohamed Osman
Strategic Information and Research Development Centre, Malaysia, 2015
eBooks
Artikel Jurnal
editor, Adrianus Eliasta Meliala
Kemitraan Partnership, 2005
Buku Teks
Bowden, Peter, author
McGraw-Hill, 1985
Buku Teks