Whittaker, E. T., & Watson, G. N. (1991). A course of modern analysis: An introduction to the general theory of infinite processes and of analytic functions, with an account of the principal transcendental functions. Universal Book Stall.

Whittaker, E. T., and G. N. Watson. A Course of Modern Analysis: An Introduction to the General Theory of Infinite Processes and of Analytic Functions, with an Account of the Principal Transcendental Functions. New Delhi: Universal Book Stall, 1991.

Whittaker, E. T., and G. N. Watson. A Course of Modern Analysis: An Introduction to the General Theory of Infinite Processes and of Analytic Functions, with an Account of the Principal Transcendental Functions. Universal Book Stall, 1991.