APA (7th ed.) Citation

Kreis, G., Schmale, W., Duchhardt, H., & Boer, P. d. (2012). Das Haus Europa. De Gruyter. https://doi.org/10.1524/9783486704211

Chicago Style (17th ed.) Citation

Kreis, Georg, Wolfgang Schmale, Heinz Duchhardt, and Pim den Boer. Das Haus Europa. De Gruyter, 2012. https://doi.org/10.1524/9783486704211.

MLA (9th ed.) Citation

Kreis, Georg, et al. Das Haus Europa. De Gruyter, 2012. https://doi.org/10.1524/9783486704211.