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
Thones, Dirk
Kluwer Academic Publsher, 1994
Buku Teks
Thoenes, Dirk.
Kluwer Academic Publishers, 1994
Buku Teks