APA (7th ed.) Citation

Heckmann, H., & Vargová, D. Kto je kto.

Chicago Style (17th ed.) Citation

Heckmann, Herbert, and Darina Vargová. Kto Je Kto.

MLA (9th ed.) Citation

Heckmann, Herbert, and Darina Vargová. Kto Je Kto.

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