McKeehan, Julie
AP Professional, 1994
Buku Teks
edited by Jerry D. Gibson
CRC Press, [date of publication not identified]
Buku Referensi
Vaughan, Rodney
Institution of Engineering and Technology, 2006
eBooks
edited by Lucian W. Pye ; contributors: Frederick W. Frey [and others]
Princeton University Press, 1963
Buku Teks
Lee, William C. Y.
John Wiley & Sons, 1993
Buku Teks