Mike Millmore, Philip Lewis, Mark Saunders, Adrian Thornhill, Trevor Morrow
Prentice-Hall, 2007
Buku Teks
Stone, Raymond J., author
John Wiley & Sons, 1995
Buku Teks
by John H. Hollenbeck [and others]
McGraw-Hill, 2009
Buku Teks
Armstrong, Michael, author
Crest Publishing House, 1999
Buku Teks
McGraw-Hill, Irwin, 2003
Buku Teks