Cita APA (7a ed.)

HUGELSHOFER, W. Rudolf Koller. Max Niehans Verlag.

Cita Chicago Style (17a ed.)

HUGELSHOFER, Walter. Rudolf Koller. Zürich: Max Niehans Verlag.

Cita MLA (9a ed.)

HUGELSHOFER, Walter. Rudolf Koller. Max Niehans Verlag.