McCullough, D. G. (2017). The American spirit: Who we are and what we stand for (First Simon & Schuster hardcover edition.). Simon & Schuster.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMcCullough, David G. The American Spirit: Who We Are and What We Stand for. First Simon & Schuster hardcover edition. New York: Simon & Schuster, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMcCullough, David G. The American Spirit: Who We Are and What We Stand for. First Simon & Schuster hardcover edition. Simon & Schuster, 2017.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.