Wagner, Travis P.
Van Nostrand reinhold, 1990
Buku Teks
Lewis, Richard J., author
Wiley-Interscience, 2002
Buku Referensi
Schnepp, Rob, 1961-, author
Jones & Bartlett Learning, 2016
Buku Teks
edited by Harry M. Freeman
McGraw-Hill, 1988
Buku Referensi
CRC Lewis, 1996
Buku Teks