APA (7th ed.) Citation

Królczyk, K. Castra Regina (Regensburg).

Chicago Style (17th ed.) Citation

Królczyk, Krzysztof. Castra Regina (Regensburg).

MLA (9th ed.) Citation

Królczyk, Krzysztof. Castra Regina (Regensburg).

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