APA (7th ed.) Citation

Petrich, M. (1977). Structure of regular semigroups. Univ. des Sciences et Techn. du Languedoc.

Chicago Style (17th ed.) Citation

Petrich, Mario. Structure of Regular Semigroups. Montpellier: Univ. des Sciences et Techn. du Languedoc, 1977.

MLA (9th ed.) Citation

Petrich, Mario. Structure of Regular Semigroups. Univ. des Sciences et Techn. du Languedoc, 1977.

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