Flam, J. (1996). Robert Smithson: The collected writings (1a. ed.). University of California Press.
Cita Chicago (17th ed.)Flam, Jack. Robert Smithson: The Collected Writings. 1a. ed. Berkeley: University of California Press, 1996.
Cita MLA (9th ed.)Flam, Jack. Robert Smithson: The Collected Writings. 1a. ed. University of California Press, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.