Bowen, John R.
Pearson, 2005
Buku Teks
Princeton University Press , 1999
Buku Teks
Ewing, J.H., editor
Dell Publishing, 1964
Buku Teks
Ambalu, Shulamit
Dorling Kindersley, 2013
Buku Referensi
edited by Stewart Sutherland, Leslie Houlden, Peter Clarke, Friedhelm Hardy
Routledge, 1988
Buku Referensi