APA (7th ed.) Citation

Porubský, Š. On theorems of Niven and Dressler.

Chicago Style (17th ed.) Citation

Porubský, Štefan. On Theorems of Niven and Dressler.

MLA (9th ed.) Citation

Porubský, Štefan. On Theorems of Niven and Dressler.

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