hi, here is the references you will need in my paper. 1.Explainingthefuture.com. (2014). 3D printing (the new industrial revolution). Retrieved from http://www.explainingthefuture.com/3dp_book.html 2.Hall, R. (1986). The relation between price and marginal cost in US industry. Retrieved from: http://www.nber.org/papers/w1785.pdf 3.Madden, S. (2013).United States Securities and Exchange Commission Washington, DC 2054. Annual […]