Wallbank, T. Walter
Scott, Foresman, 1965
Buku Teks
Routledge, 1996
Buku Teks
Zaydan, Jurdan
Kitab Bhavan, 1991
Buku Teks
Brinton, Crane, 1898-1968
Prentice-Hall, 1960
Buku Teks
Kramer, Samuel Noah
[publisher not identified], [date of publication not identified]
Buku Teks