Wigglesworth, V.B., author
Worth, 1964
Buku Teks
"New York: Andromedia Oxford, 1994.",
Buku Teks
Blum, Mark, author
Chronicle Books, 1999
Buku Referensi
Zug, George R., author
Academic Press, 1993
Buku Teks
Chu, Hung-fu, 1913-, author
Wm.C. Brown Communication, 1992
Buku Teks