2012-11-17 [2019-12-27]. (原始内容存档于2014-02-28). Tollison, C. David; Satterthwaite, John R.; Tollison, Joseph W. Practical Pain Management. Lippincott Williams
[2021-08-11]. (原始内容存档于2021-05-16). Thacker, Charles P.; Stewart, Lawrence C.; Satterthwaite, Edwin H. Jr. Firefly: a multiprocessor workstation SRC-RR-23. Hewlett-Packard