Batchelor, R.E.
Buku Teks
McClure, William
Cambridge University Press, 2000
Buku Teks
Evans, Bergen, 1904-
Random House, 1957
Buku Referensi
Syarifah Hana Alhaddad
2016
UI - Makalah dan Kertas Kerja
edited by Tim Storrie and James Matson
Cassell , 1991
Buku Teks