Bystram, Alex  Adapted by  Haas,S. & Chang, G. "30 Years Apollo 11"                July 8 1999 <http://exn.ca/apollo/eagle/landing-txt4.cfm>(26 April.2002)

NASA Official King, J.H. "Apollo 11"                                                        December 14 2001 <http://nssdc.gsfc.nasa.gov/planetary/lunar/apollo11info.html>  (27 April.2002)

Dimoulin, Jim "Apollo-11"                                                                             August.25.2000 <http://www.ksc.nasa.gov/history/apollo/apollo-11/apollo-11.html> (29April.2002)