Davis, H. T. (1962). Introduction to nonlinear differential and integral equations. Dover.
Citazione stile Chigago Style (17a edizione)Davis, Harold Thayer. Introduction to Nonlinear Differential and Integral Equations. Nueva York: Dover, 1962.
Citatione MLA (9a ed.)Davis, Harold Thayer. Introduction to Nonlinear Differential and Integral Equations. Dover, 1962.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.