APA (7th ed.) Citation

Hobbs, R. C., & Smithson, R. (1981). Robert Smithson : sculpture / Robert Hobbs with contributions by Lawrence Alloway, John Coplans, Lucy R. Lippard: Sculpture. Cornell University Press.

Chicago Style (17th ed.) Citation

Hobbs, Robert Carleton, and Robert Smithson. Robert Smithson : Sculpture / Robert Hobbs with Contributions by Lawrence Alloway, John Coplans, Lucy R. Lippard: Sculpture. Ithaca ; London: Cornell University Press, 1981.

MLA (9th ed.) Citation

Hobbs, Robert Carleton, and Robert Smithson. Robert Smithson : Sculpture / Robert Hobbs with Contributions by Lawrence Alloway, John Coplans, Lucy R. Lippard: Sculpture. Cornell University Press, 1981.

Warning: These citations may not always be 100% accurate.