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Oil shale—enormous potential but...?(PDF). RockTalk (Division of Minerals and Geology of Colorado Geological Survey). April 2004, 7 (2) [2007-07-28]. (原始内容(PDF)存档于2007-07-13).
Alali, Jamal; Abu Salah, Abdelfattah; Yasin, Suha M.; Al Omari, Wasfi. Oil Shale in Jordan(PDF) (报告). Natural Resources Authority of Jordan. 2006 [2017-06-11]. (原始内容(PDF)存档于2018-11-13).
Beger, Mariliis (编). Estonian Oil Shale Industry. Yearbook 2016(PDF). Eesti Energia, VKG, KKT, Tallinn University of Technology. 2017: 18 [2018-01-29]. (原始内容存档(PDF)于2022-08-28).
Bartis, Jim. Unconventional Liquid Fuels Overview(PDF). World Oil Conference. Association for the Study of Peak Oil & Gas – USA. 2006-10-26 [2007-06-28]. (原始内容(PDF)存档于2011-07-21).
Chapter 4. Effects of Oil Shale Technologies(PDF). Proposed Oil Shale and Tar Sands Resource Management Plan Amendments to Address Land Use Allocations in Colorado, Utah, and Wyoming and Final Programmatic Environmental Impact Statement. Bureau of Land Management. September 2008: 4‑3 [2010-08-07]. FES 08-32. (原始内容(PDF)存档于2010-05-27).