Beth, T., Jungnickel, D., & Lenz, H. (1999). Design Theory: Volume 2.
Chicago Style (17th ed.) CitationBeth, Thomas, D. Jungnickel, and H. Lenz. Design Theory: Volume 2. 1999.
MLA (9th ed.) CitationBeth, Thomas, et al. Design Theory: Volume 2. 1999.
Warning: These citations may not always be 100% accurate.