^Spencer JohnsonPeaks and Valleys : Making Good and Bad Times Work for You--At Work and in Life by Spencer Johnson (2009, Hardcover)ISBN 9781439103258 (revised Sep 2024)
^ (2013). Peaks and Valleys : Making Good and Bad Times Work for You--At Work and in LifeECampus. ISBN 9781439103258 (revised Sep 2024)
^Spencer Johnson (2012). Peaks and Valleys, Simon & Schuster. Indigo. ISBN 9781439103258 (revised Dec 2023)
^ (2015). Peaks and Valleys : Making Good and Bad Times Work for You--At Work and in LifeBiggerBooks. ISBN 9781439103258 (revised Nov 2023)