Williamson, John
New York University Press, 1991
Buku Teks
Coppock, Joseph D., author
McGraw-Hill Book Company, Inc., 1962
Buku Teks
Magee, Stephen P.
Addison-Wesley , 1980
Buku Teks
edited by Roy Harrod
Martin Press, 1965
Buku Teks
Garnant, Ross, author
ASEAN Economic Research Unit, Institute of Southeast Asian Studies, 1994
Buku Teks