Engelsohn, Harold S.
McGraw-Hill, 1981
Buku Teks
Tobey, John, author
Allyn and Bacon, 1980
Buku Teks
Vance, Elbridge P., author
Addison-Wesley, 1962
Buku Teks
Moore, John T., author
Macmillan, 1969
Buku Teks
Dwyer, David, author
Brooks/Cole, 2000
Buku Teks