Cita APA (7th ed.)
Williams, J. (2008). Engineering tribology. Cambridge University Press.
Cita Chicago (17th ed.)
Williams, John. Engineering Tribology. New York: Cambridge University Press, 2008.
Cita MLA (9th ed.)
Williams, John. Engineering Tribology. Cambridge University Press, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.