APA (7th ed.) Citation

Breitwieser, T., & Leuschner, O. (1885). Ex libris Oskar Leuschner.

Chicago Style (17th ed.) Citation

Breitwieser, Theodor, and Oskar Leuschner. Ex Libris Oskar Leuschner. [S.l, 1885.

MLA (9th ed.) Citation

Breitwieser, Theodor, and Oskar Leuschner. Ex Libris Oskar Leuschner. 1885.

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