Gaya APA
Nagle, R, K. et al (2000).
Fundamentals of Differential Equations (Fifth Edition).
Massachusetts:
Addison-Wesley Publishig Compay.
Gaya MLA
Nagle, R., Kent. et al.
"Fundamentals of Differential Equations".
Fifth Edition
Massachusetts:
Addison-Wesley Publishig Compay,
2000.
Text.