APA (7th ed.) Citation

Ondruš, B., Babala, J., & Hostýn, Ľ. Tumours in Children Till One Year of Age.

Chicago Style (17th ed.) Citation

Ondruš, Boris, Jozef Babala, and Ľ Hostýn. Tumours in Children Till One Year of Age.

MLA (9th ed.) Citation

Ondruš, Boris, et al. Tumours in Children Till One Year of Age.