APA-referens (7:e uppl.)
Zill, D. G. (2018). A First Course in differential equations with modeling applications (11th ed.). Cengage Learning.
Chicago-referens (17:e uppl.)
Zill, Dennis G. A First Course in Differential Equations with Modeling Applications. 11th ed. New Delhi: Cengage Learning, 2018.
MLA-referens (9:e uppl.)
Zill, Dennis G. A First Course in Differential Equations with Modeling Applications. 11th ed. Cengage Learning, 2018.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.