1
by Simmons, Curt
Published 2004
Que Pub.

3
by Gaulke, Sue
Published 1997
AMACOM/American Management Association

5
by Clifton, Brian
Published 2012
Wiley

10
by Kranz, Garry
Published 2007
HarperCollins e-books

13
by Peeling, Nic
Published 2010
Prentice Hall

14
by Hasson, Gill
Published 2015
Pearson Education

15
by Hall, Richard
Published 2017
Pearson Education

16
by Gorshe, Steve
Published 2014
John Wiley & Sons

17
by Biere, Mike
Published 2003
Prentice Hall PTR

18
by Brewster, Ernest
Published 2014
BCS

19
by Holden, Greg
Published 2011
Career Press

20
by Tracy, John A., Anderson, Mary Ann, Anderson, Edward, Parker, Geoffrey
Published 2018
For Dummies, a Wiley Brand