Rodrian, F. (1960). Hirsch Heinrich. Kinderbuchverlag.
Cita Chicago (17th ed.)Rodrian, Fred. Hirsch Heinrich. Berlin: Kinderbuchverlag, 1960.
Cita MLA (8th ed.)Rodrian, Fred. Hirsch Heinrich. Kinderbuchverlag, 1960.
Atenció: Aquestes cites poden no estar 100% correctes.