Harry Pollard. (1985). Ordinary differential equations: An elementary textbook for students of Mathematics, Engineering, and the Science. Mineola, New York: Dover.
Citação norma ChicagoHarry Pollard. Ordinary Differential Equations: An Elementary Textbook for Students of Mathematics, Engineering, and the Science. Mineola, New York: Dover, 1985.
Citação norma MLAHarry Pollard. Ordinary Differential Equations: An Elementary Textbook for Students of Mathematics, Engineering, and the Science. Mineola, New York: Dover, 1985.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.