APA (7th ed.) Citation

Ginsburg, S. (1980). Formal language theory. Perspectives and open problems. Academic Press.

Chicago Style (17th ed.) Citation

Ginsburg, Seymour. Formal Language Theory. Perspectives and Open Problems. New York: Academic Press, 1980.

MLA (9th ed.) Citation

Ginsburg, Seymour. Formal Language Theory. Perspectives and Open Problems. Academic Press, 1980.

Warning: These citations may not always be 100% accurate.