Spake, R. The semigroup of nonempty finite subsets of integers. Wiley.
Chicago Style (17th ed.) CitationSpake, Reuben. The Semigroup of Nonempty Finite Subsets of Integers. Wiley.
MLA (9th ed.) CitationSpake, Reuben. The Semigroup of Nonempty Finite Subsets of Integers. Wiley.
Warning: These citations may not always be 100% accurate.