APA (7th ed.) Citation

Schumacher, H., & Schumacher, S. (1973). Die Riesenwelle. Kinderbuchverl.

Chicago Style (17th ed.) Citation

Schumacher, Hildegard, and Siegfried Schumacher. Die Riesenwelle. Berlin: Kinderbuchverl, 1973.

MLA (9th ed.) Citation

Schumacher, Hildegard, and Siegfried Schumacher. Die Riesenwelle. Kinderbuchverl, 1973.

Warning: These citations may not always be 100% accurate.