APA (7th ed.) Citation

Boaks, P., Boyce, C., & Dudde, E. (1984). Deutsch konkret: A German course for young people. Langenscheidt.

Chicago Style (17th ed.) Citation

Boaks, Peter, Christopher Boyce, and Ebba-Maria Dudde. Deutsch Konkret: A German Course for Young People. Berlin: Langenscheidt, 1984.

MLA (8th ed.) Citation

Boaks, Peter, et al. Deutsch Konkret: A German Course for Young People. Langenscheidt, 1984.