APA (7th ed.) Citation

Peale, N. V. (1986). Why some positive thinkers get powerfull results. Ballantine Books.

Chicago Style (17th ed.) Citation

Peale, Norman Vincent. Why Some Positive Thinkers Get Powerfull Results. New York: Ballantine Books, 1986.

MLA (9th ed.) Citation

Peale, Norman Vincent. Why Some Positive Thinkers Get Powerfull Results. Ballantine Books, 1986.

Warning: These citations may not always be 100% accurate.