Schaefer, Jean Owens (1994). "Kollwitz in America: A Study of Reception, 1900–1960". Woman's Art Journal. 15 (1): 29–34. doi:10.2307/1358492. JSTOR1358492.
jstor.org
Schaefer, Jean Owens (1994). "Kollwitz in America: A Study of Reception, 1900–1960". Woman's Art Journal. 15 (1): 29–34. doi:10.2307/1358492. JSTOR1358492.
orden-pourlemerite.de
"KÄTHE KOLLWITZ". Orden Pour Le Mérite (dalam bahasa Jerman). Diakses tanggal 15 July 2020.