McKeever, James M.
Wiley-Interscience, 1971
Buku Teks
O`Brien, James A., 1936-, author
McGraw-Hill/Irwin, 2004
Buku Teks
Piccoli, Gabriele, author
John Wliley , 2012
Buku Teks
edited by Fred Gruenberger
Prentice-Hall, 1969
Buku Teks
Sanders, Donald H., author
McGraw-Hill , 1974
Buku Teks