Rotch, William
Prentice-Hall, c1995
Buku Teks
Merchant, Kenneth A.
Pearson education, 2012
Buku Teks
Shank, John
Prentice-Hall, 1981
Buku Teks
Simons, Robert
Pearson Education , 2014
Buku Teks
Anthony, Robert Newton, 1916-2006
Richard D. Irwin, 1989
Buku Teks