Cita APA (7th ed.)

Freyd, P. (1964). Abelian categories: An introduction to the theory of functors. Harper & Row.

Cita Chicago (17th ed.)

Freyd, Peter. Abelian Categories: An Introduction to the Theory of Functors. New York: Harper & Row, 1964.

Cita MLA (9th ed.)

Freyd, Peter. Abelian Categories: An Introduction to the Theory of Functors. Harper & Row, 1964.