Caravan, Jill
Todtri Production Limited, 1996
Buku Referensi
edited by with an introduction by Sylvestre C. Warkins and Frederic Seitz
Modern Library, 1944
Buku Teks SO
Drotning, Phillip T.
Doubleday, 1968
Buku Teks SO
Pepin Press, 1998
Buku Referensi
edited by Year
Oxford Paper, 1956
Buku Teks SO