2
by Grenny, Joseph
Published 2013
McGraw-Hill Education

4
by Patterson, Kerry, Grenny, Joseph, McMillan, Ron, Switzler, Al
Published 2011
McGraw Hill-Ascent Audio

5
by Grenny, Joseph, Patterson, Kerry, Maxfield, David, McMillan, Ron
Published 2014
McGraw Hill-Ascent Audio

6
by Grenny, Joseph, Patterson, Kerry, McMillan, Ron, Switzler, Al
Published 2022
McGraw Hill