APA (7th ed.) Citation

Gaudaen, G., & Jenssens, C. (1973). Ex Libris Ch. Jenssens.

Chicago Style (17th ed.) Citation

Gaudaen, Gerard, and Charles Jenssens. Ex Libris Ch. Jenssens. 1973.

MLA (9th ed.) Citation

Gaudaen, Gerard, and Charles Jenssens. Ex Libris Ch. Jenssens. 1973.

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