Citazione Stile APA (7a Edizione)

LANGER, R. E. (1954). First course in ordinary differen-: Tial equations. John Wiley.

Citazione stile Chigago Style (17a edizione)

LANGER, Rudolph E. First Course in Ordinary Differen-: Tial Equations. New York: John Wiley, 1954.

Citatione MLA (9a ed.)

LANGER, Rudolph E. First Course in Ordinary Differen-: Tial Equations. John Wiley, 1954.