APA (7th ed.) Citation

Zeiher, C., & Bertelsons, R. (1995). Mach mit!: Schülerbuch. Europ. Language Inst.

Chicago Style (17th ed.) Citation

Zeiher, Charlotte, and Roswita Bertelsons. Mach Mit!: Schülerbuch. Recanati: Europ. Language Inst, 1995.

MLA (9th ed.) Citation

Zeiher, Charlotte, and Roswita Bertelsons. Mach Mit!: Schülerbuch. Europ. Language Inst, 1995.