ta muallif audiokitobi haqida taassurot va sharhlar  20 Self-Help Classics Collection

Lao Tzu, Sun Tzu, James Allen, Benjamin Franklin, Confucius, Ralph Waldo Emerson, Orison Swett Marden, Kahlil Gibran, Charles F.Haanel, Wallace D. Wattles, Florence Scovel Shinn, Marcus Aurelius Antoninus, rusell H. Conwell