Woods, Kenneth B.
New York: McGraw-Hill, 1960
Buku Teks
edited by Robert F. Baker, L.G. Byrd and D. Grant Mickle
Van Nostrand Reinhold, 1975
Buku Referensi
Wright, Paul H., author
John Wiley & Sons, 2004
Buku Teks
Oglesby, Clarkson H. (Clarkson Hill), 1908-, author
John Wiley & Sons, 1963
Buku Teks
Singh, Gurcharn, author
Standard Publishers Distributors, 1978
Buku Teks