Phillips, D. T. (2017). Lincoln on leadership for today: Abraham Lincoln's approach to twenty-first-century issues. Houghton Mifflin Harcourt.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhillips, Donald T. Lincoln on Leadership for Today: Abraham Lincoln's Approach to Twenty-first-century Issues. Boston: Houghton Mifflin Harcourt, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPhillips, Donald T. Lincoln on Leadership for Today: Abraham Lincoln's Approach to Twenty-first-century Issues. Houghton Mifflin Harcourt, 2017.
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