Pinson, L., & Jinnett, J. (2006). Anatomy of a business plan: A step-by-step guide to building a business and securing your company’s future. Kaplan Publishing.
Ullman, D. G. (2015). The mechanical design process. McGraw-Hill.
Ulrich, K. T., Eppinger, S. D., & Yang, M. C. (2020). Product design and development (7th ed.). McGraw-Hill.
United Nations. (1987). Our common future. Oxford University Press.
Yahya, H. (2007). Design in nature. Harun Yahya International.