Holocaust Encyclopedia. "Selma Wijnberg". Profile. United States Holocaust Memorial Museum. Retrieved 25 May 2016.
collections.ushmm.org
Chaim Engel (16 July 1990). Oral history interview (video recording). Miles Lerman Center for the Study of Jewish Resistance: United States Holocaust Memorial Museum Oral History Branch. Event occurs at 25:37. Retrieved 25 May 2016. Linda Kuzmack interview with Chaim Engel. Permanent Collection