Butzer, P. L., & Nessel, R. J. (1971). Fourier analysis and approximation: One-dimensional theory. Academic Press.
Chicago Style (17th ed.) CitationButzer, Paul Leo, and Rolf J. Nessel. Fourier Analysis and Approximation: One-dimensional Theory. New York: Academic Press, 1971.
MLA (9th ed.) CitationButzer, Paul Leo, and Rolf J. Nessel. Fourier Analysis and Approximation: One-dimensional Theory. Academic Press, 1971.