Cita APA (7a ed.)

Woyty-Wimmer, H., & Heissenberger, R. (1928). Ex Libris Rudolf Heissenberger.

Cita Chicago Style (17a ed.)

Woyty-Wimmer, Hubert, y Rudolf Heissenberger. Ex Libris Rudolf Heissenberger. [S. l, 1928.

Cita MLA (9a ed.)

Woyty-Wimmer, Hubert, y Rudolf Heissenberger. Ex Libris Rudolf Heissenberger. 1928.