"Robert Klonsky 1918–2002"(PDF), The Volunteer: Journal of the Veterans of the Abraham Lincoln Brigade, XXIV (4): 21, December 2002, archived from the original(PDF) on July 10, 2007.
"Robert Klonsky 1918–2002"(PDF), The Volunteer: Journal of the Veterans of the Abraham Lincoln Brigade, XXIV (4): 21, December 2002, archived from the original(PDF) on July 10, 2007.