Electronic/World Wide Web>Internet Article:  Lee, Timothy B. (9/4/2013), The Coase Theorem is widely cited in economics. Ronald Coase hated it., Retrieved on 2014-08-09

Source Material [www.washingtonpost.com]

Periodicals>Journal Article:  Motesharrei, Rivas, Kalnay (March 18, 2014), Human and Nature Dynamics (HANDY): Modeling Inequality and Use of Resources in the Collapse or Sustainability of Societies, SESYNC: Socio-Environmental Synthesis Center, Retrieved on 2014-08-09

Source Material [www.atmos.umd.edu]