APA (7th ed.) Citation

Obert, V., & Ferko, V. Kniha o Slovensku.

Chicago Style (17th ed.) Citation

Obert, Viliam, and Vladimír Ferko. Kniha O Slovensku.

MLA (9th ed.) Citation

Obert, Viliam, and Vladimír Ferko. Kniha O Slovensku.

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