Nason, Alvin, author
John Wiley & Sons, 1965
Buku Teks
Marslan, Douglas, author
Holt, Rinehart and Winston, 1964
Buku Teks
Bailey, Paul C.
International Textbook Company, 1969
Buku Teks
Mader, Sylvia S., author
McGraw-Hill , 1998
Buku Teks
Case, James F., author
Macmillan, 1979
Buku Teks