APA (7th ed.) Citation

Gregor, P., & Kövesdi, K. Happylógus.

Chicago Style (17th ed.) Citation

Gregor, Peter, and Károly Kövesdi. Happylógus.

MLA (9th ed.) Citation

Gregor, Peter, and Károly Kövesdi. Happylógus.

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