APA (7th ed.) Citation

Holka, P., & Lengyel, J. Dúhová guľôčka.

Chicago Style (17th ed.) Citation

Holka, Peter, and Ján Lengyel. Dúhová Guľôčka.

MLA (9th ed.) Citation

Holka, Peter, and Ján Lengyel. Dúhová Guľôčka.

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