APA (7th ed.) Citation

Ruiz, M., & Wilton, N. (2004). The Four agreements: A calendar for wisdom and personal freedom, 2005. Universe.

Chicago Style (17th ed.) Citation

Ruiz, Miguel, and Nicholas Wilton. The Four Agreements: A Calendar for Wisdom and Personal Freedom, 2005. New York: Universe, 2004.

MLA (9th ed.) Citation

Ruiz, Miguel, and Nicholas Wilton. The Four Agreements: A Calendar for Wisdom and Personal Freedom, 2005. Universe, 2004.