Hopcroft, J. E., Motwani, R., & Ullman, J. D. (2001). Introduction to automata theory, languages, and computation (2nd ed.). Pearson.
Chicago Style (17th ed.) CitationHopcroft, John E., Rajeev Motwani, and Jeffrey D. Ullman. Introduction to Automata Theory, Languages, and Computation. 2nd ed. Singapore: Pearson, 2001.
MLA (9th ed.) CitationHopcroft, John E., et al. Introduction to Automata Theory, Languages, and Computation. 2nd ed. Pearson, 2001.
Warning: These citations may not always be 100% accurate.