Grisham, John, author
Doubleday, 1991
Buku Teks
Beer, Stafford, author
John Wiley & Sons, 1981
Buku Teks
Thompson, Arthur A., 1940-, author
Prentice-Hall, 1989
Buku Teks
edited by G.C. Archibald
Penguin Education, 1971
Buku Teks
Rugman, Alan M., author
McGraw-Hill, 1985
Buku Teks