APA (7th ed.) Citation

Baker, B. B., & Copson, E. T. (1950). The mathematical theory of Huygens' principle (2d ed.). Clarendon Press.

Chicago Style (17th ed.) Citation

Baker, Bevan B., and E. T. Copson. The Mathematical Theory of Huygens' Principle. 2d ed. Oxford: Clarendon Press, 1950.

MLA (9th ed.) Citation

Baker, Bevan B., and E. T. Copson. The Mathematical Theory of Huygens' Principle. 2d ed. Clarendon Press, 1950.