APA (7th ed.) Citation

Hirshfeld, Y. (1994). Congruences in commutative semigroups.

Chicago Style (17th ed.) Citation

Hirshfeld, Yoram. Congruences in Commutative Semigroups. Edinburgh, 1994.

MLA (9th ed.) Citation

Hirshfeld, Yoram. Congruences in Commutative Semigroups. 1994.

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