APA引文

Steenrod, N. E. (1962). Cohomology operators.

Chicago Edition Citation

Steenrod, N E. Cohomology Operators. Princeton University Press, New Jersey, 1962.

MLA引文

Steenrod, N E. Cohomology Operators. 1962.

警告：這些引文格式不一定是100％准確.