[publisher not identified], [date of publication not identified]
Buku Teks
Sin, Gyo-hwan, author
Haenurigihwek, 2007
Buku Teks
Garnaut, Ross, author
Gramedia, 1979
Buku Teks
Truong, Thanh-Dam, author
LP3ES , 1992
Buku Teks
edited by David A. Preston
John Wiley & Sons, 1980
Buku Teks