Osteen, J. (2007). Become a better you: 7 keys to improving your life every day (1st Free Press hardcover ed.). Free Press.
Cita Chicago (17th ed.)Osteen, Joel. Become a Better You: 7 Keys to Improving Your Life Every Day. 1st Free Press hardcover ed. New York: Free Press, 2007.
Cita MLA (8th ed.)Osteen, Joel. Become a Better You: 7 Keys to Improving Your Life Every Day. 1st Free Press hardcover ed. Free Press, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.