APA (7th ed.) Citation

Gaudaen, G., & Denille, R. (1960). Ex Libris Roger Denille.

Chicago Style (17th ed.) Citation

Gaudaen, Gerard, and Roger Denille. Ex Libris Roger Denille. [S.l, 1960.

MLA (9th ed.) Citation

Gaudaen, Gerard, and Roger Denille. Ex Libris Roger Denille. 1960.

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