Robert Smithson : Sculpture

MLA

Alloway, Lawrence, et al. Robert Smithson : Sculpture. London: Cornell University Press, 1981.

APA

Alloway, L., Coplans, J., Hobbs, R., & Lippard, L. R. (1981). Robert Smithson : Sculpture. London: Cornell University Press.

Chicago

Alloway, Lawrence, John Coplans, Robert Hobbs, and Lucy R Lippard. Robert Smithson: Sculpture. London: Cornell University Press, 1981.