1
by Portny, Stanley E.
Published 2020
Tantor Audio

2
by Portny, Stanley E.
Published 2007
Wiley Pub.

3
by Graham, Nick, Portny, Stanley E.
Published 2015
John Wiley & Sons

4
by Portny, Stanley E., Portny, Jonathan L.
Published 2022
For Dummies

5
by Graham, Nick
Published 2011
John Wiley
Other Authors: ...Portny, Stanley E....

6
by Graham, Nick
Published 2015
Wiley Publishing Australia
Other Authors: ...Portny, Stanley E....