Derrick, W. R., & Grossman S., S. I. (1976). Elementary differential equations with applications (2a. ed.). Addison-Wesley.
Citazione stile Chigago Style (17a edizione)Derrick, William R., e Stanley I. Grossman S. Elementary Differential Equations with Applications. 2a. ed. Reading: Addison-Wesley, 1976.
Citatione MLA (9a ed.)Derrick, William R., e Stanley I. Grossman S. Elementary Differential Equations with Applications. 2a. ed. Addison-Wesley, 1976.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.