APA (7th ed.) Citation

Hobbs, R. C. (1981). Robert Smithson-- sculpture. Cornell University Press.

Chicago Style (17th ed.) Citation

Hobbs, Robert Carleton. Robert Smithson-- Sculpture. Ithaca, N.Y.: Cornell University Press, 1981.

MLA (9th ed.) Citation

Hobbs, Robert Carleton. Robert Smithson-- Sculpture. Cornell University Press, 1981.