APA (7th ed.) Citation

Gielniak, J., & Witz, I. (1965). Ex libris.

Chicago Style (17th ed.) Citation

Gielniak, Józef, and Ignacy Witz. Ex Libris. [S. l.], 1965.

MLA (9th ed.) Citation

Gielniak, Józef, and Ignacy Witz. Ex Libris. 1965.

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