David McCullough "A Introductory Essay to Vietnam: A television History"<http://www.pbs.org/wgbh/amex/vietnam/intro.html> 2001
David McCullough "Vietnam Online" <http://www.pbs.org/wgbh/amex/vietnam/whos/index.html>
Laura A. "The Poem to her Father during the war" <http://www.stardate.bc.ca/survivors/Writing/laura_a_another_unsent_letter.html>