Beth, T., Jungnickel, D., & Lenz, H. (1999). Design theory (Second edition.). Cambridge University Press. https://doi.org/10.1017/CBO9780511549533
Chicago Style (17th ed.) CitationBeth, Thomas, D. Jungnickel, and Hanfried Lenz. Design Theory. Second edition. Cambridge: Cambridge University Press, 1999. https://doi.org/10.1017/CBO9780511549533.
MLA (9th ed.) CitationBeth, Thomas, et al. Design Theory. Second edition. Cambridge University Press, 1999. https://doi.org/10.1017/CBO9780511549533.
Warning: These citations may not always be 100% accurate.