1.
Lectures in semigroups. London, New York: Wiley; 1977.
Lectures in semigroups. London, New York : Wiley, 4 juin 1977. ISBN 0-471-99514-2
Petrich Mario. (1977). Lectures in semigroups. Wiley.
MLA (8th ed.) CitationPetrich Mario. Lectures in Semigroups. Wiley, 1977.
Warning: These citations may not always be 100% accurate.