APA (7th ed.) Citation

Krzywka, R., & Klein-Szymańska, B. (1959). Ex Libris SB.

Chicago Style (17th ed.) Citation

Krzywka, Ryszard, and Barbara Klein-Szymańska. Ex Libris SB. [S. l.], 1959.

MLA (9th ed.) Citation

Krzywka, Ryszard, and Barbara Klein-Szymańska. Ex Libris SB. 1959.

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