Gray, J. (2000). Linear differential equations and group theory from Riemann to Poincare.- 2nd ed. (2nd ed.). Birkhauser.
Citação norma ChicagoGray, Jeremy. Linear Differential Equations and Group Theory from Riemann to Poincare.- 2nd Ed. 2nd ed. Boston: Birkhauser, 2000.
Citação norma MLAGray, Jeremy. Linear Differential Equations and Group Theory from Riemann to Poincare.- 2nd Ed. 2nd ed. Birkhauser, 2000.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.