APA (7 ম সংস্করণ) উদ্ধৃতি

ETGEN, G. J. (1977). An Introduction to ordinary differential: Equations with difference equations, numerical methods and applications. Harper and Row.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

ETGEN, Garret J. An Introduction to Ordinary Differential: Equations with Difference Equations, Numerical Methods and Applications. New York: Harper and Row, 1977.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

ETGEN, Garret J. An Introduction to Ordinary Differential: Equations with Difference Equations, Numerical Methods and Applications. Harper and Row, 1977.