edited by Ray Sarch
McGraw-Hill, 1990
Buku Referensi
Black, Uyless D., author
A Reston Book, 1987
Buku Teks
Nichols, Elizabeth A., author
McGraw-Hill, 1982
Buku Teks
Sippl, Charles J., author
Macmillan, 1985
Buku Referensi
Tooley, Michael H., author
Boston Newnes, 1992
Buku Teks