Hello, as the title says I am looking for books, even chapters in books, and any other material covering the American Psychological warfare program in the Vietnam war. Any sources are much appreciated, thanks!
Not especially scholarly, but you might want to look at the work of Herb Friedman on psyops in the Vietnam War - various linked articles here:
http://www.psywarrior.com/links.html
Also a documentary on Operation Wandering Soul, featuring Herb Friedman here:
http://www.hbmpodcast.com/podcast/hbm055-ghost-tape-number-ten
(See also: https://pcf45.com/sealords/cuadai/wanderingsoul.html)
(Also, not directly related to psyops, but a fascinating take on belief in the supernatural that underpinned Operation Wandering Soul is Heonik Kwon's Ghosts of War in Vietnam)
See also:
Nicholas J. Cull's The Cold War and the United States Information Agency: American Propaganda and Public Diplomacy, 1945–1989 (2008) has some interesting material on psychological warfare in Vietnam
Robert W. Chandler, War of Ideas: The US Propaganda Campaign in Vietnam (1981)
James O. Whittaker, "Psychological Warfare in Vietnam," Political Psychology, 18 (1997): 165-179
Lydia M. Fish, "General Edward G. Lansdale and the Folksongs of Americans in the Vietnam War," The Journal of American Folklore 102 (1989): 390-411 has some material on psyops