Boyer, P. S. (1993). The enduring vision: A history of the American people (2nd ed.). D.C. Heath and Co..

Boyer, Paul S. The Enduring Vision: A History of the American People. 2nd ed. Lexington: D.C. Heath and Co., 1993.

Boyer, Paul S. The Enduring Vision: A History of the American People. 2nd ed. D.C. Heath and Co., 1993.