APA (7th ed.) Citation

Peale, N. V. (1948). Guideposts Personal messages of inspiration and faith. Ace Books.

Chicago Style (17th ed.) Citation

Peale, Norman Vincent. Guideposts Personal Messages of Inspiration and Faith. Ace Books, 1948.

MLA (9th ed.) Citation

Peale, Norman Vincent. Guideposts Personal Messages of Inspiration and Faith. Ace Books, 1948.

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