Whittaker, E. T., & Watson, G. N. (1927). 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. - 4th ed. (4th ed.). Cambridgr University Press.

Whittaker, E. T., và 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. - 4th Ed. 4th ed. New York: Cambridgr University Press, 1927.

Whittaker, E. T., và 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. - 4th Ed. 4th ed. Cambridgr University Press, 1927.