Cita APA (7th ed.)
Simmons, H. (2011). An introduction to category theory. Cambridge University Press.
Cita Chicago (17th ed.)
Simmons, Harold. An Introduction to Category Theory. Cambridge ; New York: Cambridge University Press, 2011.
Cita MLA (9th ed.)
Simmons, Harold. An Introduction to Category Theory. Cambridge University Press, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.