APA (7th ed.) Citation

Ruiz, D. M. (2011). The four agreements: A practical guide to personal freedom.

Chicago Style (17th ed.) Citation

Ruiz, Don Miguel. The Four Agreements: A Practical Guide to Personal Freedom. 2011.

MLA (8th ed.) Citation

Ruiz, Don Miguel. The Four Agreements: A Practical Guide to Personal Freedom. 2011.

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