MLA

Andreescu, Titu, et al. Geometric Problems On Maxima and Minima. Birkhäuser Boston, 2006.

APA

Andreescu, T., Mushkarov, O., Stoyanov, L., & Stoyanov, L. N. (2006). Geometric Problems on Maxima and Minima. Birkhäuser Boston.

Chicago

Andreescu, Titu, Oleg Mushkarov, Luchezar Stoyanov, and Luchezar N Stoyanov. Geometric Problems On Maxima and Minima. : Birkhäuser Boston, 2006.