APA (7th ed.) Citation

Linz, P. (1990). An introduction to formal languages and automata. Heath.

Chicago Style (17th ed.) Citation

Linz, Peter. An Introduction to Formal Languages and Automata. Lexington, Mass. u.a: Heath, 1990.

MLA (9th ed.) Citation

Linz, Peter. An Introduction to Formal Languages and Automata. Heath, 1990.

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