Tolong jelaskan mengenai Rujukan dari Bethlehem Steel dalam bahasa melayu

Warren, Kenneth. Bethlehem Steel: Builder and Arsenal of America. Pittsburgh, Pa.: University of Pittsburgh Press, 2008.

Beyond Steel: An Archive of Lehigh Valley Industry and Culture

Bethlehem Steel Corporation and Bethlehem Ship Corporation photograph collection  at Hagley Museum and Library

Photos of the abandoned plant in Bethlehem Pennsylvania

Corporate website (Internet Archive snapshot from 2000-12-03)

Syarikat yang ditubuhkan pada 1857