APA استشهاد

Powell , M. J. (1996). Approximation theory and methods. Cambridge University Press.

استشهاد بنمط شيكاغو

Powell , M. J.D. Approximation Theory and Methods. Cambridge: Cambridge University Press, 1996.

MLA استشهاد

Powell , M. J.D. Approximation Theory and Methods. Cambridge University Press, 1996.