Evans, David R., author
Thomson, 2004
Buku Teks
Beatty, Richard H.
John Wiley & Sons, 1986
Buku Teks
Ivey, Allen E., author
Thomson, 2003
Buku Teks
Stewart, Charles J., author
McGraw-Hill, 2006
Buku Teks
Gordon, Nathan J., author
Elsevier , 2011
Buku Teks