Apostol, T. M. (1989). Introduction to analytic number theory (Springer International Student Edition.). Springer-Verlag; Narosa Publishing House.

Apostol, Tom M. Introduction to Analytic Number Theory. Springer International Student Edition. New York ; New Delhi: Springer-Verlag; Narosa Publishing House, 1989.

Apostol, Tom M. Introduction to Analytic Number Theory. Springer International Student Edition. Springer-Verlag; Narosa Publishing House, 1989.