APA引文

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

芝加哥风格引文

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

MLA引文

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

警告:这些引文格式不一定是100%准确.