APA (7th ed.) Citation

Beth, T., Jungnickel, D., & Lenz, H. (1999). Design theory (Second edition.). Cambridge University Press. https://doi.org/10.1017/CBO9781139507660

Chicago Style (17th ed.) Citation

Beth, Thomas, D. Jungnickel, and Hanfried Lenz. Design Theory. Second edition. Cambridge: Cambridge University Press, 1999. https://doi.org/10.1017/CBO9781139507660.

MLA (9th ed.) Citation

Beth, Thomas, et al. Design Theory. Second edition. Cambridge University Press, 1999. https://doi.org/10.1017/CBO9781139507660.