Porteous, I. R., & Porteous, I. R. (2001). Geometric differentiation: For the intelligence of curves and surfaces (2. edition.). Cambridge, UK: Cambridge University Press.
Chicago Style CitationPorteous, Ian R., and Ian R. Porteous. Geometric Differentiation: For the Intelligence of Curves and Surfaces. 2. edition. Cambridge, UK: Cambridge University Press, 2001.
MLA CitationPorteous, Ian R., and Ian R. Porteous. Geometric Differentiation: For the Intelligence of Curves and Surfaces. 2. edition. Cambridge, UK: Cambridge University Press, 2001.
Warning: These citations may not always be 100% accurate.