APA (7th ed.) Citation

Hansen, V. L. (1998). Shadows of the circle : conic sections, optimal figures, and non-Euclidean geometry / Vagn Lundsgaard Hansen: Conic sections, optimal figures, and non-Euclidean geometry. World Scientific.

Chicago Style (17th ed.) Citation

Hansen, Vagn Lundsgaard. Shadows of the Circle : Conic Sections, Optimal Figures, and Non-Euclidean Geometry / Vagn Lundsgaard Hansen: Conic Sections, Optimal Figures, and Non-Euclidean Geometry. Singapore ; London: World Scientific, 1998.

MLA (9th ed.) Citation

Hansen, Vagn Lundsgaard. Shadows of the Circle : Conic Sections, Optimal Figures, and Non-Euclidean Geometry / Vagn Lundsgaard Hansen: Conic Sections, Optimal Figures, and Non-Euclidean Geometry. World Scientific, 1998.

Warning: These citations may not always be 100% accurate.