[publisher not identified], [date of publication not identified]
Naskah
Graham
Buku Teks
Hill, Napoleon, author
Ufuk Press, 2009
Buku Teks
Albrecht-Carrie, Rene, author
Columbia University Press, 1950
Buku Teks
Thomson, David, author
Longmans, 1962, 1973
Buku Teks