Gaya APA

ZILL, D, G. (1982). A first course in differential equations with applications / Dennis G. Zill (2nd ed). : Prindle, Weber Schmidt.

Gaya MLA

ZILL, Dennis, G. "A first course in differential equations with applications / Dennis G. Zill". 2nd ed : Prindle, Weber Schmidt, 1982. Referensi.