Attard, G., & Barnes, C. (1998). Surfaces. Oxford University Press.
Cita Chicago (17th ed.)Attard, Gary, i Colin Barnes. Surfaces. New York: Oxford University Press, 1998.
Cita MLA (9th ed.)Attard, Gary, i Colin Barnes. Surfaces. Oxford University Press, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.