APA (7th ed.) Citation

Györy, K., & Halász, G. (1990). Number theory. North-Holland Publishing.

Chicago Style (17th ed.) Citation

Györy, K., and G. Halász. Number Theory. Amsterdam: North-Holland Publishing, 1990.

MLA (9th ed.) Citation

Györy, K., and G. Halász. Number Theory. North-Holland Publishing, 1990.

Warning: These citations may not always be 100% accurate.