(1991). Jack Youngerman: Sculpture in aluminum, bronze and wood ; [exhibition 1991].
Chicago-viite (17. p.)Jack Youngerman: Sculpture in Aluminum, Bronze and Wood ; [exhibition 1991]. New York, 1991.
MLA-viite (8. p.)Jack Youngerman: Sculpture in Aluminum, Bronze and Wood ; [exhibition 1991]. 1991.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.