Wohlers, T. T. (2015). Wohlers Report 2015: 3D Printing and Additive Manufacturing State of the Industry Annual Worldwide Progress Report. Wohlers Associates.
Cita Chicago Style (17a ed.)Wohlers, Terry T. Wohlers Report 2015: 3D Printing and Additive Manufacturing State of the Industry Annual Worldwide Progress Report. Colorado,USA: Wohlers Associates, 2015.
Cita MLA (9a ed.)Wohlers, Terry T. Wohlers Report 2015: 3D Printing and Additive Manufacturing State of the Industry Annual Worldwide Progress Report. Wohlers Associates, 2015.
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