Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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