Παραπομπή APA

Osteen, J. (2007). Become a better you: 7 keys to improving your life everyday. Free press.

Παραπομπή Chicago Style

Osteen, Joel. Become a Better You: 7 Keys to Improving Your Life Everyday. New York: Free press, 2007.

Παραπομπή MLA

Osteen, Joel. Become a Better You: 7 Keys to Improving Your Life Everyday. Free press, 2007.