Rowe, John
Time-Life Books, 1987
Buku Teks SO
McKay, Gary
Allen & Unwin Australia, 1987
Buku Teks SO
edited by W. Scott Thompson and Donaldson D. Frizzell
Crane, Russak, 1977
Buku Teks
Chen, Min
Lynne Rienner Publishers, 1992
Buku Teks SO
Duong, Thu Huong
Indonesiatera , 2003
Buku Teks