Cita APA (7a ed.)

Hasenohr, C., & Drobner, A. (1906). Ex Libris Agnes Drobner.

Cita Chicago Style (17a ed.)

Hasenohr, Curt, y Agnes Drobner. Ex Libris Agnes Drobner. [S. l, 1906.

Cita MLA (9a ed.)

Hasenohr, Curt, y Agnes Drobner. Ex Libris Agnes Drobner. 1906.