APA (7th ed.) Citation

Hopcroft, J. E., & Ullman, J. D. (1979). Introduction to automata theory, languages, and computation. Addison-Wesley.

Chicago Style (17th ed.) Citation

Hopcroft, John E., and Jeffrey D. Ullman. Introduction to Automata Theory, Languages, and Computation. Reading, Mass.: Addison-Wesley, 1979.

MLA (9th ed.) Citation

Hopcroft, John E., and Jeffrey D. Ullman. Introduction to Automata Theory, Languages, and Computation. Addison-Wesley, 1979.