एपीए उद्धरण

(1968). Algebraic theory of machines, languages and semigroups. Academic Press.

शिकागो स्टाइल उद्धरण

Algebraic Theory of Machines, Languages and Semigroups. New York: Academic Press, 1968.

एमएलए उद्धरण

Algebraic Theory of Machines, Languages and Semigroups. Academic Press, 1968.