APA (7th ed.) Citation

Ade, M., & Saeng, E. (1900). Ex-Libris Erna Saeng.

Chicago Style (17th ed.) Citation

Ade, Mathilde, and Erna Saeng. Ex-Libris Erna Saeng. [S. l, 1900.

MLA (9th ed.) Citation

Ade, Mathilde, and Erna Saeng. Ex-Libris Erna Saeng. 1900.

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