Cita APA (7th ed.)

Peale, N. V. (1956). The Power of positive thinking. Prentice-Hal.

Cita Chicago (17th ed.)

Peale, Norman Vincent. The Power of Positive Thinking. Englewood Cliffs, N.J: Prentice-Hal, 1956.

Cita MLA (9th ed.)

Peale, Norman Vincent. The Power of Positive Thinking. Prentice-Hal, 1956.