Hopcroft, J. E., & Ullman, J. D. (1990). Introduction to automata theory, Languages and computation.
Chicago Edition CitationHopcroft, John E., and Jeffery D. Ullman. Introduction to Automata Theory, Languages and Computation. Narosa Publishing House, New Delhi, 1990.
MLA Edition CitationHopcroft, John E., and Jeffery D. Ullman. Introduction to Automata Theory, Languages and Computation. 1990.
Warning: These citations may not always be 100% accurate.