Kelly, Joseph F.
Collier-Macmillan , 1970
Buku Teks
McLeod, Raymond, author
John Wiley & Sons, 1982
Buku Teks
Martino, R.L., author
McGraw-Hill, 1968
Buku Teks
O`Brien, James A., 1936-, author
McGraw-Hill/Irwin, 2004
Buku Teks
Forkner, Irvine, author
John Wiley & Sons, 1973
Buku Teks