Webb, T.D., author
McFarland & company , 2012
Buku Teks
Hull, John, 1946-, author
John Wiley & Sons, 2015
Buku Teks
Baker, James C., author
Prentice-Hall, 1998
Buku Teks
Angle, Paul M
Fawcett Publications,Inc, 1960
Buku Teks
Saunders, Anthony, author
McGraw-Hill Education, 2014
Buku Teks