Toynbee, Arnold J., author
The Beacon Press , 1961
Buku Teks
Forrester, Jay W. (Jay Wright), author
John Wiley & Sons, 1961
Buku Teks
McCormick, Ernest J. (Ernest James), author
Prentice-Hall, 1984
Buku Teks
Pippenger, John, author
McGraw-Hill, 1980
Buku Teks
Kazantsev, E. L., author
John Wiley & Sons, 1961
Buku Teks