APA (7th ed.) Citation

Marden, O. S. (2006). The secret of achievement: Great changes to simplify your complicated life. Masterpiece.

Chicago Style (17th ed.) Citation

Marden, Orison Swett. The Secret of Achievement: Great Changes to Simplify Your Complicated Life. Batu Caves, Selangor Darul Ehsan: Masterpiece, 2006.

MLA (8th ed.) Citation

Marden, Orison Swett. The Secret of Achievement: Great Changes to Simplify Your Complicated Life. Masterpiece, 2006.

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