APA (7th ed.) Citation

Gulruchsor & Čižmárik, R. Dvadsiate storočie.

Chicago Style (17th ed.) Citation

Gulruchsor and Rudolf Čižmárik. Dvadsiate Storočie.

MLA (9th ed.) Citation

Gulruchsor and Rudolf Čižmárik. Dvadsiate Storočie.

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