Citazione Stile APA (7a Edizione)
Zill, D. G. A first course in differential ecuations with applications: Answers to even numbered problems (2a edición.). Prindle, Weber and Schmidt.
Citazione stile Chigago Style (17a edizione)
Zill, Dennis G. A First Course in Differential Ecuations with Applications: Answers to Even Numbered Problems. 2a edición. Boston, EUA: Prindle, Weber and Schmidt.
Citatione MLA (9a ed.)
Zill, Dennis G. A First Course in Differential Ecuations with Applications: Answers to Even Numbered Problems. 2a edición. Prindle, Weber and Schmidt.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.