APA (7th ed.) Citation

Hawking, L., Hawking, S., Parsons, G., & Šajtyová, D. (2018). Gregor a modrý mesiac. Slovart.

Chicago Style (17th ed.) Citation

Hawking, Lucy, Stephen Hawking, Garry Parsons, and Dagmar Šajtyová. Gregor a Modrý Mesiac. Bratislava: Slovart, 2018.

MLA (9th ed.) Citation

Hawking, Lucy, et al. Gregor a Modrý Mesiac. Slovart, 2018.