(原始内容存档于2020-12-08). The "Urbee" 3D-Printed Car: Coast to Coast on 10 Gallons?. Truthout. [2019-01-25]. (原始内容存档于2020-11-11). Stratasys. 3D Printed Car Creator
Evidence from Linked Survey and Administrative Data" (页面存档备份,存于互联网档案馆) Truthout, July 25, 2019 Republicans' Refusal to Expand Medicaid Resulted in Over
(英语). Peter Dreier. Henry Wallace, America’s Forgotten Visionary. Truthout(英语:Truthout). 2013-02-03 [2022-09-12]. (原始内容存档于2022-11-12) (英语). Dennis Perrin