Pomper, Gerald M.. (1989) “The Presidential Nominations”, The Election of 1988. Chatham House Publishers, p. [htt://archive.org/details/electionof1988re00me/37 37]. ISBN 978-0-934540-77-3.
Biden's week of blame and tumult after Kabul fall. BBC News (2021). “"History is going to judge us very harshly, I believe, if we allow the hope of a liberated Afghanistan to evaporate because we are fearful of the phrase nation-building or we do not stay the course"”.
