Cita APA (7th ed.)

Vincent. (1980). The Power of Positive Thinking Peale, Norman. Harvard Business Review.

Cita Chicago (17th ed.)

Vincent. The Power of Positive Thinking Peale, Norman. Boston: Harvard Business Review, 1980.

Cita MLA (9th ed.)

Vincent. The Power of Positive Thinking Peale, Norman. Harvard Business Review, 1980.