Rujukan JPLDIS

  1. ↑ Hawkins, John L. (1991). "dSTORY; how I really developed dBASE. (author of dBASE tells of the database management system's history)". Data Based Advisor. Advisor Publications, Inc. 9 (3): 93. ISSN 1090-6436. Diarkibkan daripada asal pada 16 January 2013. Dicapai 21 December 2010.  Parameter |month= tidak diketahui diabaikan (bantuan)
  2. ↑ Moser, Karen D.; Ould, Andrew (1990). "Court ruling turns table on A-T in dBASE battle. (Ashton-Tate's law suit against Fox Software Inc.)". PC Week. New York, New York: Ziff Davis Enterprise. 7 (50): 1. ISSN 0740-1604. Dicapai 21 December 2010.  Parameter |month= tidak diketahui diabaikan (bantuan)
  3. 1 2 The History of FoxPro - Ashton-Tate vs Fox Software "The History of Fox Pro" Check |url= value (bantuan). Fox Pro. Dicapai December 21, 2010. 

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