Leonard, G., & Pabon, T. A. (2018). Mastery: The keys to success and long-term fulfillment (Unabridged.). Tantor Media.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLeonard, George, और Timothy Andrés Pabon. Mastery: The Keys to Success and Long-term Fulfillment. Unabridged. Old Saybrook: Tantor Media, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLeonard, George, और Timothy Andrés Pabon. Mastery: The Keys to Success and Long-term Fulfillment. Unabridged. Tantor Media, 2018.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.