APA (7th ed.) Citation

Langner, W. Z., & Knot, T. (1942). Ex Libris T. Knota.

Chicago Style (17th ed.) Citation

Langner, Wiktor Zbigniew, and Tadeusz Knot. Ex Libris T. Knota. 1942.

MLA (9th ed.) Citation

Langner, Wiktor Zbigniew, and Tadeusz Knot. Ex Libris T. Knota. 1942.

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