APA (7th ed.) Citation

Grabowski, E., & Karnasiewicz, E. (1960). Ex libris Edwarda Karnasiewicza.

Chicago Style (17th ed.) Citation

Grabowski, Edward, and Edward Karnasiewicz. Ex Libris Edwarda Karnasiewicza. 1960.

MLA (9th ed.) Citation

Grabowski, Edward, and Edward Karnasiewicz. Ex Libris Edwarda Karnasiewicza. 1960.

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