APA (7th ed.) Citation

Powell, M. J. D. (1981). Approximation theory and methods (1. publ.). Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Powell, Michael J. D. Approximation Theory and Methods. 1. publ. Cambridge [u.a.]: Cambridge Univ. Press, 1981.

MLA (9th ed.) Citation

Powell, Michael J. D. Approximation Theory and Methods. 1. publ. Cambridge Univ. Press, 1981.