Rahman, Tunku Abdul, author
Heineman Educational Books, 1978
Buku Teks
Bearden, James H., author
Holt, Rinehart and Winston , 1969
Buku Teks
edited by Keith K. Cox
Prentice-Hall, [Date of publication not identified]
Buku Teks
edited by Harold M. Groves
Henry Holt Company , 1950
Buku Teks
edited by Harold M. Groves
Henry Holt and Company , 1947
Buku Teks