Herring, George. America's Longest War: The United States and Vietnam 1950-1975, 2nd edition, New York: Alfred A. Knopf, 1979.

This brief but comprehensive book is divided into clear sections that can be read separately and contains an extensive and invaluable bibliographic essay.

Lee, Don. A Profile of Tim O'Brien in Ploughshares, Vol. 21, No. 4, Winter, 1995, p. 196.

A useful overview of O'Brien's career. Includes biographical information.