Wells, Lisa K., author
Prentice-Hall, 1995
Buku Teks
Beiser, Karl, author
Meckler, 1991
Buku Teks
O`Brien, James A., 1936-, author
McGraw-Hill, 2011
Buku Teks
Parker, C.C. (Christopher Charles), author
Butterworths, 1986
Buku Teks
Saez, Eileen Elliott de, author
Facet, 2002
Buku Teks