1.
Semigroups underlying first-order logic. Providence (R.I.): American Mathematical Society; 2024.
Semigroups underlying first-order logic. Providence (R.I.) : American Mathematical Society, 21 mai 2024. ISBN 0-8218-4149-1
Craig William. (2006). Semigroups underlying first-order logic. American Mathematical Society.
MLA (8th ed.) CitationCraig William. Semigroups Underlying First-order Logic. American Mathematical Society, 2006.
Warning: These citations may not always be 100% accurate.