Cole, Gerald A., author
Waveland, 1994
Buku Teks
Goldman, Charles R., author
McGraw-Hill , 1983
Buku Teks
Welch, Paul Smith, author
McGraw-Hill, 1952
Buku Teks
edited by Jean-Pierre Descy, François Darchambeau and Martin Schmid
Springer, 2012
eBooks
Wetzel, Robert G.
Saunders College Publishing, 1983
Buku Teks