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
Zaks, Rodnay, author
Sybex, 1979
Buku Teks
Thomas, Alex Jr., author
Rinehart- Press, 1971
Buku Teks