APA (7th ed.) Citation

Northcott, D. G. (1972). An introduction to homological algebra. Cambridge University.

Chicago Style (17th ed.) Citation

Northcott, D. G. An Introduction to Homological Algebra. Cambridge: Cambridge University, 1972.

MLA (9th ed.) Citation

Northcott, D. G. An Introduction to Homological Algebra. Cambridge University, 1972.