APA (7th ed.) Citation

Hirzel, H. R. C., & Schmidt, M. (1903). Ex libris Marie Schmidt.

Chicago Style (17th ed.) Citation

Hirzel, Hermann Robert Catumby, and Marie Schmidt. Ex Libris Marie Schmidt. [S.l.], 1903.

MLA (9th ed.) Citation

Hirzel, Hermann Robert Catumby, and Marie Schmidt. Ex Libris Marie Schmidt. 1903.

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