APA (7th ed.) Citation

Challoner, J., Hajossy, R., & Košinár, I. (1997). Energia. Osveta.

Chicago Style (17th ed.) Citation

Challoner, Jack, Rudolf Hajossy, and Ivan Košinár. Energia. Martin: Osveta, 1997.

MLA (9th ed.) Citation

Challoner, Jack, et al. Energia. Osveta, 1997.