Peale, . N. V. (2016). Power of positive thinking. Om Books International.
Chicago Edition CitationPeale, Norman Vincent. Power of Positive Thinking. Uttar pradesh: Om Books International, 2016.
Cita MLAPeale, Norman Vincent. Power of Positive Thinking. Om Books International, 2016.
Atenció: Aquestes cites poden no estar 100% correctes.