Langer, L. L. (1978). Survival through art: The career of Gertrud Kolmar / Lawrence L. Langer. Year Book / Leo Baeck Institute.
Lua i Stíl Chicago (17ú heag.)Langer, Lawrence L. "Survival Through Art: The Career of Gertrud Kolmar / Lawrence L. Langer." Year Book / Leo Baeck Institute 1978.
Lua MLA (8ú heag.)Langer, Lawrence L. "Survival Through Art: The Career of Gertrud Kolmar / Lawrence L. Langer." Year Book / Leo Baeck Institute, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.