David, K. (1970). Beenschäfer. Kinderbuchverlag.
Cita Chicago (17th ed.)David, Kurt. Beenschäfer. Berlin: Kinderbuchverlag, 1970.
Cita MLA (8th ed.)David, Kurt. Beenschäfer. Kinderbuchverlag, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.