APA (7th ed.) Citation

Piehler, J., & Hessler, J. (1968). Summ-summ brumm-brumm (1.-20. Tausend.). Helingsche Verlagsanstalt.

Chicago Style (17th ed.) Citation

Piehler, J., and J. Hessler. Summ-summ Brumm-brumm. 1.-20. Tausend. Leipzig: Helingsche Verlagsanstalt, 1968.

MLA (8th ed.) Citation

Piehler, J., and J. Hessler. Summ-summ Brumm-brumm. 1.-20. Tausend. Helingsche Verlagsanstalt, 1968.