APA Edition Citation

Hopcroft, J. E., & Ullman, J. D. (1990). Introduction to automata theory, Languages and computation.

Chicago Edition Citation

Hopcroft, John E., and Jeffery D. Ullman. Introduction to Automata Theory, Languages and Computation. Narosa Publishing House, New Delhi, 1990.

MLA Edition Citation

Hopcroft, John E., and Jeffery D. Ullman. Introduction to Automata Theory, Languages and Computation. 1990.

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