APA (7th ed.) Citation

Marden, O. S. (2005). The secret of achievement. Golden Books Centre.

Chicago Style (17th ed.) Citation

Marden, Orison Swett. The Secret of Achievement. Selangor: Golden Books Centre, 2005.

MLA (9th ed.) Citation

Marden, Orison Swett. The Secret of Achievement. Golden Books Centre, 2005.

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