APA (7th ed.) Citation

Grünewald, H., Bradbury, A., & Vetter-M'Caw, S. (2017). Real Business English, B1: 21st century skills at work. Ernst Klett Sprachen.

Chicago Style (17th ed.) Citation

Grünewald, Hazel, Anette Bradbury, and Suzanne Vetter-M'Caw. Real Business English, B1: 21st Century Skills at Work. Stuttgart: Ernst Klett Sprachen, 2017.

MLA (9th ed.) Citation

Grünewald, Hazel, et al. Real Business English, B1: 21st Century Skills at Work. Ernst Klett Sprachen, 2017.