APA (7th ed.) Citation

Clifford, A. H., & Preston, G. B. (1961). The algebraic theory of semigroups. American Mathematical Society.

Chicago Style (17th ed.) Citation

Clifford, A. H., and G. B. Preston. The Algebraic Theory of Semigroups. Providence: American Mathematical Society, 1961.

MLA (9th ed.) Citation

Clifford, A. H., and G. B. Preston. The Algebraic Theory of Semigroups. American Mathematical Society, 1961.

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