APA (7th ed.) Citation

Krzywka, R., & Pokorska, M. (1959). Marii [Pokorskiej] Ex Libris.

Chicago Style (17th ed.) Citation

Krzywka, Ryszard, and Maria Pokorska. Marii [Pokorskiej] Ex Libris. [S.l, 1959.

MLA (9th ed.) Citation

Krzywka, Ryszard, and Maria Pokorska. Marii [Pokorskiej] Ex Libris. 1959.

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