APA (7th ed.) Citation

Lorentz, G. G. (1986). Approximation of functions (2. ed.). Chelsea.

Chicago Style (17th ed.) Citation

Lorentz, George G. Approximation of Functions. 2. ed. New York, NY: Chelsea, 1986.

MLA (9th ed.) Citation

Lorentz, George G. Approximation of Functions. 2. ed. Chelsea, 1986.