Kuzma, Jan W., author
Mayfield Publ., 1984
Buku Teks
Kuzma, Jan W., author
McGraw-Hill, 2000
Buku Teks
Kaplan, Robert M., author
Allyn and Bacon , 1987
Buku Teks
Dunn, Olive Jean, author
John Wiley & Sons, 1977
Buku Teks
Schork, M. Anthony, author
Prentice-Hall, 2000
Buku Teks