"Carnegie Mellon University Receives Nobel Laureate Clifford Shull Papers Grant and Additional Gift Will Make the Collection Available to Researchers", (Mar. 12, 2004): Carnegie Mellon University.
"Carnegie Mellon University Receives Nobel Laureate Clifford Shull Papers Grant and Additional Gift Will Make the Collection Available to Researchers", (Mar.ngày 1 tháng 12 năm 2004): Carnegie Mellon University.