Citazione Stile APA (7a Edizione)

Nemyckij, V. V., & Stepanov, V. V. (1960). Qualitative theory of differential equations. Princeton University Press.

Citazione stile Chigago Style (17a edizione)

Nemyckij, Viktor Vladimirovič, e Vâčeslav Vasil½evič Stepanov. Qualitative Theory of Differential Equations. Princeton (N.J.): Princeton University Press, 1960.

Citatione MLA (8a ed.)

Nemyckij, Viktor Vladimirovič, e Vâčeslav Vasil½evič Stepanov. Qualitative Theory of Differential Equations. Princeton University Press, 1960.