Boyce, W. E. (1986). Elementary differential equations (4th.). Wiley & Sons.
Citazione stile Chigago Style (17a edizione)Boyce, William E. Elementary Differential Equations. 4th. USA: Wiley & Sons, 1986.
Citatione MLA (9a ed.)Boyce, William E. Elementary Differential Equations. 4th. Wiley & Sons, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.