The form of the firm, 2019: ECIP t.p. (Abraham A. Singer)

The sanity of satire, 2020: eCIP title page (Abraham Singer) data view (1985)

Loyola University Chicago profile, viewed 29 April 2020: (Professor Singer's teaching and research lies at the intersection of business ethics and political theory) https://www.luc.edu/quinlan/faculty/abrahamsinger.shtml