Fenstermaker, J. Van
Meredith , 1969
Buku Teks
Horvitz, Paul M.
Prentice-Hall, 1963
Buku Teks
Dewing, Arthur Stone
Ronald Press Co, 1953
Buku Teks
Horvitz, Paul M.
Prenrice-Hall , 1987
Buku Teks
Grinblatt, Mark, author
McGraw-Hill/Irwin, 2002
Buku Teks