Lerner, Eugene M.
Harcourt Brace Jovanovich , 1971
Buku Teks
Gup, Benton E.
John Wiley & Sons, 1987
Buku Teks
Bradley, Joseph F.
Dryden Press, 1974
Buku Teks
Gitman, Lawrence J.
Addison-Wesley, 1997
Buku Teks
Lasher, William R.
Western College Publishing , 2000
Buku Teks