Coker, A. Kayode, author
Gulf Professional Publishing, 2001
Buku Teks
Coker, A. Kayode
Butterworth-Heinemann, 2001
Multimedia
Hill, Charles G., author
Wiley, 1977
Buku Teks
Butt, John B., author
Marcell Dekker, Inc, 2000
Buku Teks
Nauman, E. Bruce, author
John Wiley & Sons, 1987
Buku Teks