APA (7th ed.) Citation

St. John, N. (2009). The secret code of success: 7 hidden steps to more wealth and happiness. HarperCollins Publishers.

Chicago Style (17th ed.) Citation

St. John, Noah. The Secret Code of Success: 7 Hidden Steps to More Wealth and Happiness. New York: HarperCollins Publishers, 2009.

MLA (8th ed.) Citation

St. John, Noah. The Secret Code of Success: 7 Hidden Steps to More Wealth and Happiness. HarperCollins Publishers, 2009.

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