Foster, R. J. (1988). Celebration of discipline: The path to spiritual growth (Rev.ed.). HarperCollins.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFoster, Richard J. Celebration of Discipline: The Path to Spiritual Growth. Rev.ed. New York: HarperCollins, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFoster, Richard J. Celebration of Discipline: The Path to Spiritual Growth. Rev.ed. HarperCollins, 1988.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.