Citazione Stile APA (7a Edizione)

Warren, R. (2002). The purpose driven life: What on earth am I here for? Zondervan.

Citazione stile Chigago Style (17a edizione)

Warren, Rick. The Purpose Driven Life: What on Earth Am I Here for? Grand Rapids, Michigan: Zondervan, 2002.

Citatione MLA (9a ed.)

Warren, Rick. The Purpose Driven Life: What on Earth Am I Here for? Zondervan, 2002.