(1991). Jack Youngerman: Sculpture in aluminum, bronze and wood ; [exhibition 1991].
Lua i Stíl Chicago (17ú heag.)Jack Youngerman: Sculpture in Aluminum, Bronze and Wood ; [exhibition 1991]. New York, 1991.
Lua MLA (8ú heag.)Jack Youngerman: Sculpture in Aluminum, Bronze and Wood ; [exhibition 1991]. 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.