Blough, Roy
McGraw-Hill , 1966
Buku Teks
Rugman, Alan M.
McGraw-Hill, 1985
Buku Teks
Wild, John J.
Prentice-Hall, 2003
Buku Teks
Donald A Ball, McCulloch, Jr., Wendell H., J Michael Geringer, Michael S Minor, Jeanne M NcNett
McGraw-Hill, Irwin, 2008
Buku Teks
Wormald, Avison
Pan Books, 1973
Buku Teks