Porteous, I. R. (2001). Geometric differentiation: For the intelligence of curves and surfaces (2nd ed.). Cambridge, UK ; New York: Cambridge University Press.
Citação norma ChicagoPorteous, Ian R. Geometric Differentiation: For the Intelligence of Curves and Surfaces. 2nd ed. Cambridge, UK ; New York: Cambridge University Press, 2001.
Citação norma MLAPorteous, Ian R. Geometric Differentiation: For the Intelligence of Curves and Surfaces. 2nd ed. Cambridge, UK ; New York: Cambridge University Press, 2001.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.