อ้างอิง ของ เอทีแอนด์ที

  1. ↑ "Sec 8-k" (Press release). AT&T. April 28, 2006. Archived from the original on 30 September 2007. สืบค้นเมื่อ September 29, 2007. Unknown parameter |deadurl= ignored (help)
  2. ↑ "Randall L. Stephenson, Chairman, Chief Executive Officer and President". สืบค้นเมื่อ August 14, 2011.
  3. 1 2 3 4 "AT&T Inc. 2013 Annual Report" (PDF). AT&T.
  4. ↑ Godinez, Victor and David McLemore. "AT&T moving headquarters to Dallas from San Antonio." The Dallas Morning News. Saturday June 28, 2008. Retrieved on June 18, 2009.
  5. ↑ Leichtman Research Group, "Research Notes," First Quarter 2012, pg. 6, AT&T (#1) with 21,232,000 residential phone lines.
  6. ↑ "AT&T Financial and Operational Results" (PDF). AT&T. October 22, 2015. สืบค้นเมื่อ October 26, 2015.
  7. ↑ "AT&T". Forbes. May 2014. สืบค้นเมื่อ May 26, 2014.

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