APA (7th ed.) Citation

Jourdan, R., & Eckert, C. (1998). Willkommen!: Allemand, seconde langue. Nathan.

Chicago Style (17th ed.) Citation

Jourdan, Robert, and Charles Eckert. Willkommen!: Allemand, Seconde Langue. Paris: Nathan, 1998.

MLA (9th ed.) Citation

Jourdan, Robert, and Charles Eckert. Willkommen!: Allemand, Seconde Langue. Nathan, 1998.

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