Prince, Thomas R.
Irwin, 1970
Buku Teks
Thierauf, Robert J., author
Prentice-Hall, 1982
Buku Teks
Simon, Herbert A., author
Harper, 1960
Buku Teks
O`Brien, James A., 1936-, author
McGraw-Hill/Irwin, 2004
Buku Teks
Piccoli, Gabriele, author
John Wliley , 2012
Buku Teks