Fox, Karl August, 1917-, author
John Wiley & Sons, 1968
Buku Teks
Enke, Stephen, author
Prentice-Hall, 1951
Buku Teks
Stockton, John R., author
South Western, 1966
Buku Teks
McAllister, Harry E., author
John Wiley, 1975
Buku Teks
Palmer, George
Melbourne MacMillan , 1966
Buku Teks