Cita APA (7a ed.)

Héroux, B., & Steinbach, R. (1910). Ex-Libris Dr. Rudolph Steinbach.

Cita Chicago Style (17a ed.)

Héroux, Bruno, y Rudolf Steinbach. Ex-Libris Dr. Rudolph Steinbach. [S.l.], 1910.

Cita MLA (9a ed.)

Héroux, Bruno, y Rudolf Steinbach. Ex-Libris Dr. Rudolph Steinbach. 1910.