Reilly, Kevin, author
Harper and Row, c1980
Buku Teks
White, Osmar, foreword
Heinemann, 1969
Buku Teks
Gesick, Lorraine M., author
Southeast Asia Program Cornell University, 1995
Buku Teks
Clyde, Paul H. (Paul Hibbert), author
Prentice-Hall, 1948
Buku Teks
Kelly, L.G.
Basil Blackwell, 1979
Buku Teks