APA (7th ed.) Citation

Hollenberg, F., & Beck, R. (1908). Ex Libris Robert Beck.

Chicago Style (17th ed.) Citation

Hollenberg, Felix, and Robert Beck. Ex Libris Robert Beck. [S. l.], 1908.

MLA (9th ed.) Citation

Hollenberg, Felix, and Robert Beck. Ex Libris Robert Beck. 1908.

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