Cita APA (7th ed.)
Santayana, G., McCormick, J., & Frost, K. W. (2011). Abell-Lucretius. MIT Press.
Cita Chicago (17th ed.)
Santayana, George, John McCormick, i Kristine Walters Frost. Abell-Lucretius. Cambridge, Mass.: MIT Press, 2011.
Cita MLA (9th ed.)
Santayana, George, et al. Abell-Lucretius. MIT Press, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.