Coffron, James W., author
Sybex, 1984
Buku Teks
Stern, Nancy B., author
John Wiley & Sons, 1970
Buku Teks
edited by Susann Ragsdale
McGraw-Hill, 1992
Buku Teks
Jones, Capers, author
McGraw-Hill, 1986
Buku Teks
Reynolds, John C., author
Prentice-Hall, 1978
Buku Teks