McCullagh, C. Behan, author
Routledge, 1998
Buku Teks
Routledge, 2004
Buku Teks
Gardner, Philip, author
Routledge, 2010
Buku Teks
Malchow, Howard L., author
Bloomsbury Academic, an imprint of Bloomsbury Pub, 2016
Buku Teks
Elton, Geoffrey Rudolph, author
Sydney University Press, 1967
Buku Teks