Kratz, Ernst Ulrich
Gadjah Mada University Press, 1988
Buku Referensi
chosen by Michael Grant
Penguin Books, 1990
Buku Teks SO
edited with introductions, bibliographies, and notes by John Wilson Bowyer and John Lee Brooks
Appleton, 1938
Buku Teks SO
edited by John C. Hunter
Wiley-Blackwell, 2010
Buku Teks SO
Turner, Paul
Clarendon Press, 1990
Buku Referensi