Arnold, Dieter
Princeton University Press, 2003
Buku Referensi
Brackman, Rabbi Levi
American Management Association;, 2008
eBooks
Lear, Jonathan
Routledge, 2005
Buku Teks
Turner, Ralph
McGraw-Hill, 1941
Buku Teks
Taylor, John H., 1958-
British Museum, 2010
Buku Teks