APA (7th ed.) Citation

Northcott, D. G. (1960). An introduction to homological algebra. Univ. Pr.

Chicago Style (17th ed.) Citation

Northcott, Douglas Geoffrey. An Introduction to Homological Algebra. Cambridge: Univ. Pr, 1960.

MLA (9th ed.) Citation

Northcott, Douglas Geoffrey. An Introduction to Homological Algebra. Univ. Pr, 1960.

Warning: These citations may not always be 100% accurate.