DuBois, J. (2013). The president's devotional: The daily readings that inspired President Obama (FIRST EDITION.). HarperOne.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDuBois, Joshua. The President's Devotional: The Daily Readings That Inspired President Obama. FIRST EDITION. San Francisco: HarperOne, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDuBois, Joshua. The President's Devotional: The Daily Readings That Inspired President Obama. FIRST EDITION. HarperOne, 2013.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.