edited by Kevin Gilbert
Penguin Books, 1988
Buku Teks
Holt Rinehart & Winston, 1972
Buku Teks
Hope, A. D., author
Melbourne University Press, 1985.
Buku Teks
Packer, Richard
University of Queensland, 1972
Buku Teks
edited and translated by G.W.J. Drewes
Martinus Nijhoff, 1980
Buku Teks