Keith, Arthur Berriedale, 1879-1944, author
Oxford University Press, 1948
Buku Referensi
Haddawy, Husain, author
Everyman`s Library, 1992
Buku Teks
Keith, Arthur Berriedale, 1879-1944, author
Oxford University Press, 1928
Buku Teks
Gzella, Holger, author
Brill, 2015
Buku Teks
edited by Kate Darian-Smith, Liz Gunner and Sarah Nuttall
Routledge, 1996
Buku Teks