Cita APA (7th ed.)

Wimer, A., & Hobbs, R. (1980). Robert Smithson: Sculpture. Herbert F. Johnson Museum of Art.

Cita Chicago (17th ed.)

Wimer, Ann, i Robert Hobbs. Robert Smithson: Sculpture. New York: Herbert F. Johnson Museum of Art, 1980.

Cita MLA (8th ed.)

Wimer, Ann, i Robert Hobbs. Robert Smithson: Sculpture. Herbert F. Johnson Museum of Art, 1980.