edited by F.B. Golley
Elsiver, 1983
Buku Referensi
Nichol, John, author
David & Charies, 1990
Buku Referensi
Whitmore, T.C., author
Oxford University Press, 1986
Buku Teks
Francis, W.D., author
Australian Government Publishing Service, 1981
Buku Teks
Hamilton, Lawrence S., author
Gadjah Mada University Press, 1988
Buku Teks