APA (7th ed.) Citation

Vella, C., & Hunziker, J. Ciao. Lehrmittelverl.

Chicago Style (17th ed.) Citation

Vella, Carlo, and James Hunziker. Ciao. Zürich: Lehrmittelverl.

MLA (9th ed.) Citation

Vella, Carlo, and James Hunziker. Ciao. Lehrmittelverl.

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