Brightman, Edgar Sheffield
Holt, Rinehart and Winston, 1961
Buku Teks
Patrick, George Thomas White, author
George Allen and Unwin, 1925
Buku Teks
edited by R.M. Dworkin
Oxford University Press, 1977
Buku Teks
edited by R.M. Dworkin
Oxford University Press, 1990
Buku Teks
Stone, Alison, author
Polity Press, 2007
Buku Teks