APA (7th ed.) Citation

Hatvani, L., & Sz.-Nagy, B. (1990). Qualitative theory of differential equations. North-Holland Publishing.

Chicago Style (17th ed.) Citation

Hatvani, L., and B. Sz.-Nagy. Qualitative Theory of Differential Equations. Amsterdam: North-Holland Publishing, 1990.

MLA (9th ed.) Citation

Hatvani, L., and B. Sz.-Nagy. Qualitative Theory of Differential Equations. North-Holland Publishing, 1990.