APA (7th ed.) Citation

Gaudaen, G., & Bräuer, A. (1962). Ex Libris Dr. A. Bräuer.

Chicago Style (17th ed.) Citation

Gaudaen, Gerard, and Arthur Bräuer. Ex Libris Dr. A. Bräuer. [S. l, 1962.

MLA (9th ed.) Citation

Gaudaen, Gerard, and Arthur Bräuer. Ex Libris Dr. A. Bräuer. 1962.

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