Rex, John
Oxford University Press, 1979
Buku Teks
Walter, Paul A.F., author
McGraw-Hill, 1952
Buku Teks
Benedict, Ruth, author
The Viking Press, 1947
Buku Teks
Matthews, Basil
Edinburgh House Press, 1927
Buku Teks
Montagu, Ashley, 1905-1999, author
The World Publishing, 1964
Buku Teks