APA (7th ed.) Citation

Grabowski, E., & Dygacz, A. (1956). Ex Libris Adolfa Dygacza.

Chicago Style (17th ed.) Citation

Grabowski, Edward, and Adolf Dygacz. Ex Libris Adolfa Dygacza. [S.l.], 1956.

MLA (9th ed.) Citation

Grabowski, Edward, and Adolf Dygacz. Ex Libris Adolfa Dygacza. 1956.

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