MLA

Gal, Sorin G, and George A Anastassiou. Shape-preserving Approximation by Real and Complex Polynomials. Springer Basel AG, 2008.

APA

Gal, S. G, & Anastassiou, G. A. (2008). Shape-Preserving Approximation by Real and Complex Polynomials. Springer Basel AG.

Chicago

Gal, Sorin G., and George A Anastassiou. Shape-Preserving Approximation by Real and Complex Polynomials. : Springer Basel AG, 2008.