Não informado. (2020). Reports of the Secretary and Treasurer. John Simon Guggenheim Memorial Foundation.
Lua i Stíl Chicago (17ú heag.)Não informado. Reports of the Secretary and Treasurer. New York: John Simon Guggenheim Memorial Foundation, 2020.
Lua MLA (8ú heag.)Não informado. Reports of the Secretary and Treasurer. John Simon Guggenheim Memorial Foundation, 2020.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.