J. asli: The third force, the psychology of Abraham Maslow. Bibl. ada.
Indeks. Bibl. p. 709-728.
J. asli: The 22 non-negotiable laws of wellness feel, think and live better than you ever thought possible.
J. asli: How to use your complexes.
Bibl. J. asli: The Achievement factors.
J. asli: Simplify your life: 100 ways to slow down and enjoy the things that really matter.