Fischer, Hermann
Cambridge University Press, 2010
eBooks
edited by George R. Creeger and Joseph W. Reed, Jr.
Holt, Rinehart and Winston, 1964
Buku Teks
James, David Gwilyn
Geoffrey Cumberlege, 1948
Buku Teks
Stafford, Fiona
Wiley Blackwell, 2012
Buku Teks
edited with introduction by David Wright
Penguin Books, 1982
Buku Referensi