Ayres, F. (1972). Theory and Problems of Differential Equations. McGraw Hill.
Citazione stile Chigago Style (17a edizione)Ayres, Frank. Theory and Problems of Differential Equations. McGraw Hill, 1972.
Citatione MLA (9a ed.)Ayres, Frank. Theory and Problems of Differential Equations. McGraw Hill, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.