ULRICH, K. T. E. (2020). Product design and development. McGraw-Hill Education.
Lua i Stíl Chicago (17ú heag.)ULRICH, Karl T. Eppinger. Product Design and Development. McGraw-Hill Education, 2020.
Lua MLA (9ú heag.)ULRICH, Karl T. Eppinger. Product Design and Development. McGraw-Hill Education, 2020.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.