Brown, David, author
Macmillan, 1978
Buku Teks
Poot, Huib, author
Gadjah Mada University Press, 1990
Buku Teks
Gedam, Ratnakar M
Deep & Deep Publications, 1987
Buku Teks
edited by Helen Hughes and You Poh Seng
University of Wisconsin Press, 1969
Buku Teks
Schrag, Clarence C., author
Harper & Row, 1963
Buku Teks