DiLavore, Philip
John Wiley & Sons, 1984
Buku Teks
Doty, Steve, author
CRC Press, Taylor & Francis Group, 2009
Buku Referensi
Foley, Gerald, author
Penguin Books, 1976
Buku Teks
Sorensen, Harry A., author
John Wiley & Sons, 1983
Buku Teks
McCormick, Michael E., author
John Wiley & Sons, 1981.
Buku Teks