Further reading

• "David Dortort." The Complete Marquis Who's Who. Marquis Who's Who
  Marquis Who's Who
  Marquis Who's Who, a subsidiary of News Communications, Inc., is the American publisher of a number of directories containing short biographies...
  
  , 2010. Gale
  Gale (publisher)
  Gale is an educational publishing company based in Farmington Hills, Michigan, the United States, in the western suburbs of Detroit. It was part of the Thomson Learning division of the Thomson Corporation, a Canadian company, but became part of Cengage Learning in 2007.The company, formerly known...
  
   Biography In Context. Web. Retrieved 22 Sept. 2010. Fee, via Fairfax County Public Library
  Fairfax County Public Library
  The Fairfax County Public Library is a public library system headquartered in Suite 324 in the Fairfax County Government Center at 12000 Government Center Parkway in unincorporated Fairfax County, Virginia, United States....
  
  . Document URL http://ic.galegroup.com/ic/bic1/ReferenceDetailsPage/ReferenceDetailsWindow?displayGroupName=K12-Reference&prodId=BIC2&action=e&windowstate=normal&catId=&documentId=GALE%7CK2015232128&mode=view&userGroupName=fairfax_main&jsid=f58d4ae54dc8d4fd7984575112846aae Gale Document Number: GALE|K2015232128

External links