Shu, Heng Shan
[publisher not identified], [date of publication not identified]
Buku Teks
Batey, Ian, author
Bhuana Ilmu Populer, 2003
Buku Teks
Heelas, Paul, author
Blackwell, 2005
Buku Teks
Hartley, John, author
Blackwell, 2008
eBooks
Conway, Ronald, author
Sun Books, 1971
Buku Teks