Cita APA (7th ed.)
Warren, R. (2002). The purpose-driven life: What on earth am I here for? Oasis International LTD.
Cita Chicago (17th ed.)
Warren, Richard. The Purpose-driven Life: What on Earth Am I Here for? Geneva: Oasis International LTD, 2002.
Cita MLA (9th ed.)
Warren, Richard. The Purpose-driven Life: What on Earth Am I Here for? Oasis International LTD, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.