APA (7th ed.) Citation

Langer, R. E. (1954). A First course in ordinary differential equations. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Langer, Rudolph E. A First Course in Ordinary Differential Equations. New York: John Wiley & Sons, 1954.

MLA (9th ed.) Citation

Langer, Rudolph E. A First Course in Ordinary Differential Equations. John Wiley & Sons, 1954.