APA (7th ed.) Citation

Krzywka, R., & Borucki, K. (1957). Ex Libris Kazimierza Boruckiego.

Chicago Style (17th ed.) Citation

Krzywka, Ryszard, and Kazimierz Borucki. Ex Libris Kazimierza Boruckiego. [S.l, 1957.

MLA (9th ed.) Citation

Krzywka, Ryszard, and Kazimierz Borucki. Ex Libris Kazimierza Boruckiego. 1957.

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