Von Hagen, V. W. (1946). South American Zoo. Lulian Messner.
Lua i Stíl Chicago (17ú heag.)Von Hagen, Víctor W. South American Zoo. Lulian Messner, 1946.
Lua MLA (9ú heag.)Von Hagen, Víctor W. South American Zoo. Lulian Messner, 1946.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.