Spate, Oskar Hermann Kristian
Oxford University Press, 1965
Buku Teks SO
Thorpe, 1994
Buku Referensi
edited by Bruce Brown
Australian National University Press, 1971
Buku Teks SO
Campbell, I.C.
University of Queensland Press, 1989
Buku Teks SO
Sinclair, Keith
Penguin Books, 1986
Buku Teks SO