Cita APA (7a ed.)

Huber, E., & Vetter, T. (1952). Ex Libris Dr. Theo Vetter.

Cita Chicago Style (17a ed.)

Huber, Ernest, y Théodore Vetter. Ex Libris Dr. Theo Vetter. [S. l, 1952.

Cita MLA (9a ed.)

Huber, Ernest, y Théodore Vetter. Ex Libris Dr. Theo Vetter. 1952.