Borden, Iain, author
Routledge, 2014
Buku Teks
Hertzberger, Herman, author
010 Publishers, 2001
Buku Teks
Gloag, John, author
George Allen & Unwin, [1958]
Buku Teks
Benjamin, Jules R., author
Bidford Books, 1998
Buku Teks
Weeks, Christopher, author
Johns Hopkins University Press, 1994
Buku Referensi