Citazione Stile APA (7a Edizione)

Nemytskii, V. V., & Stepanov, V. V. (1960). Qualitative theory of differential equations. Princeton University Series.

Citazione stile Chigago Style (17a edizione)

Nemytskii, Viktor Vladimirovich, e V. V. Stepanov. Qualitative Theory of Differential Equations. Princeton: Princeton University Series, 1960.

Citatione MLA (9a ed.)

Nemytskii, Viktor Vladimirovich, e V. V. Stepanov. Qualitative Theory of Differential Equations. Princeton University Series, 1960.