Freeland, John Maxwell, 1920-
F.W. Cheshire, 1968
Buku Teks SO
Freeland, John Maxwell, 1920-
Angus and Robertson, 1971
Buku Teks SO
Conway, Hazel
Routledge , 1994
Buku Teks SO
Aman Anders
Cambridge, Mass, 1992.
Buku Teks SO
Murcut, Glenn
Image Publishing, 2002
Buku Teks SO