"Michael R. Barratt, M.D."(PDF). ISS Phase 1 History Project. NASA. April 14, 1998. Archived from the original(PDF) on November 17, 2004. Retrieved May 16, 2009.
NASA (October 13, 2004). "NEEMO 7". NASA. Archived from the original on October 30, 2004. Retrieved September 23, 2011.
"Michael R. Barratt, M.D."(PDF). ISS Phase 1 History Project. NASA. April 14, 1998. Archived from the original(PDF) on November 17, 2004. Retrieved May 16, 2009.
NASA (October 13, 2004). "NEEMO 7". NASA. Archived from the original on October 30, 2004. Retrieved September 23, 2011.