Hoffmann, M., & Mettler, M. (1963). Gertianosch. Pannonia.
Cita Chicago (17th ed.)Hoffmann, Matthias, i Michael Mettler. Gertianosch. Freilassing: Pannonia, 1963.
Cita MLA (8th ed.)Hoffmann, Matthias, i Michael Mettler. Gertianosch. Pannonia, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.