Cita APA (7a ed.)
Piper, J. (2003). Don't waste your life. Crossway.
Cita Chicago Style (17a ed.)
Piper, John. Don't Waste Your Life. Wheaton: Crossway, 2003.
Cita MLA (9a ed.)
Piper, John. Don't Waste Your Life. Crossway, 2003.
Precaución: Estas citas no son 100% exactas.