Aho,, A. V., Hopcroft,, J. E., & Ullman,, J. D. (1998). Design and analysis of computer algorithms. Pearson Education.

Aho,, Alfred V., John E. Hopcroft,, and Jeffrey D. Ullman. Design and Analysis of Computer Algorithms. Delhi: Pearson Education, 1998.

Aho,, Alfred V., et al. Design and Analysis of Computer Algorithms. Pearson Education, 1998.