"Joseph E. Stiglitz - Biographical". "Les Prix Nobel" ("The Nobel Prizes 2001") edited by Tore Frängsmyr, Nobel Foundation, Stockholm, www.nobelprize.org. 2002.
Joseph Priestley (1790). “Experiments and Observations on Different Kinds of Air and Other Branches of Natural Philosophy, Connected with the Subject ...: Being the Former Six Volumes Abridged and Methodized, with Many Additions”, p.43
Joseph Murphy, Ph.D., D.D. (2009). “Putting the Power of Your Subconscious Mind to Work: Reach New Levels of Career Success Using the Power of Your Subconscious Mind”, p.6, Penguin
Douglas Adams (2016). “Dirk Gently's Holistic Detective Agency Box Set: Dirk Gently's Holistic Detective Agency and The Long Dark Tea-Time of the Soul”, p.249, Simon and Schuster