Barber, Daniel, author
Oxford University Press, 2016
eBooks
Khoo, Kheng Hor, author
Bhuana Ilmu Populer , 2003
Buku Teks
Low, Angelica, author
Inovasi, 2003
Buku Teks
Xu, Yuanxiang
China Intercontinental Press, 2007
Buku Teks
Friedrich, Carl J.
Rinehart, 1948
Buku Teks