APA (7th ed.) Citation

Cheney, E. W. (1966). Introduction to approximation theory. McGraw-Hill Book Co.

Chicago Style (17th ed.) Citation

Cheney, E. W. Introduction to Approximation Theory. New York: McGraw-Hill Book Co, 1966.

MLA (9th ed.) Citation

Cheney, E. W. Introduction to Approximation Theory. McGraw-Hill Book Co, 1966.