APA (7th ed.) Citation

Valle, E., Goldschmidt, P., & Fischer, K. (1963). Zauberkristall. Kinderbuchverl.

Chicago Style (17th ed.) Citation

Valle, Enrico, Paula Goldschmidt, and Karl Fischer. Zauberkristall. Berlin: Kinderbuchverl, 1963.

MLA (9th ed.) Citation

Valle, Enrico, et al. Zauberkristall. Kinderbuchverl, 1963.

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