Biertempfel, Bob. History at PNC Park! Pirates' Josh Harrison ends Rich Hill's no-hit bid with walk-off homer. Pittsburgh Tribune-Review. August 23, 2017 [August
Holt. BBC Sport. 2008-12-09 [2009-05-16]. (原始内容存档于2020-04-15) (英语). No Leeds bid for Holt, say Shrews. BBC Sport. 2009-01-23 [2009-05-16]. (原始内容存档于2020-04-15)
$60 million contract to tunnel under the Anacostia River, a $60 million contract to build the Anacostia station, and a $100 million contract to build the
Extending the No. 7 Line Continues to Progress. MTA Press Release. [2014-04-10]. (原始内容存档于2014-04-13). Work to Begin Under Last Major Contract Needed to Extend