Bergerud, Eric M. Red thunder, tropic lightning : the world of a combat division in Vietnam / Eric M. Bergerud. - Boulder : Westview Press, 1993. - xix, 328 p. : ill., maps. ISBN: 1863734872 Subjects--Corporate Names: United States. Army Infantry Division, 25th. Subjects--Topical Terms: Vietnamese Conflict, 1961-1975--United States.