APA (7th ed.) Citation

Craig, W. (2006). Semigroups underlying first-order logic. American Mathematical Society.

Chicago Style (17th ed.) Citation

Craig, William. Semigroups Underlying First-order Logic. Providence, Rhode Island: American Mathematical Society, 2006.

MLA (9th ed.) Citation

Craig, William. Semigroups Underlying First-order Logic. American Mathematical Society, 2006.

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