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"Alternatives"(PDF). Regional Transit System Plan: Final Environmental Impact Statement (Report). Regional Transit Project. March 1993. p. 33. OCLC27723634. Archived from the original(PDF) on October 1, 2015. Retrieved February 22, 2018 – via Sound Transit.
"Projects: South Corridor". Regional Transportation Investment District. June 28, 2007. Archived from the original on August 8, 2007. Retrieved February 22, 2018.
"Alternatives"(PDF). Regional Transit System Plan: Final Environmental Impact Statement (Report). Regional Transit Project. March 1993. p. 33. OCLC27723634. Archived from the original(PDF) on October 1, 2015. Retrieved February 22, 2018 – via Sound Transit.
"Executive Summary". Central Link Light Rail Transit Project Final Environmental Impact Statement. Sound Transit. November 1999. pp. 61–62. OCLC42730086. Retrieved February 22, 2018 – via Google Books.