Cruickshank, Henry M.
Richard D. Irwin, 1958
Buku Teks
David, Fred R.
Pearson, 2009
Buku Teks
Thompson, Arthur A., 1940-
Irwin, 1996
Buku Teks
Wheelen, Thomas L.
Addison-Weley Publishing , 1990
Buku Teks
Bursk, Edward Collins
Prentice-Hall, 1975
Buku Teks