APA (7th ed.) Citation

Voigt, P., & Drobner, G. (1900). Ex Libris Gustav Drobner: A. D. 1900.

Chicago Style (17th ed.) Citation

Voigt, Paul, and Gustav Drobner. Ex Libris Gustav Drobner: A. D. 1900. [S. l.], 1900.

MLA (9th ed.) Citation

Voigt, Paul, and Gustav Drobner. Ex Libris Gustav Drobner: A. D. 1900. 1900.

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