111th Street station (IND Fulton Street Line) (English Wikipedia)

"BMT Lines, Rapid Transit Division" (GIF). www.nycsubway.com. 1924. Archived from the original on October 12, 2007. Retrieved November 9, 2007.
"Rapid Transit Lines of the New York City Transit System" (GIF). www.nycsubway.com. 1948. Archived from the original on October 12, 2007. Retrieved November 9, 2007.
"Official New York City Subway Map and Station Guide" (GIF). www.nycsubway.com. 1959. Archived from the original on October 12, 2007. Retrieved November 9, 2007.
"www.nycsubway.org: IND Fulton Street Line". www.nycsubway.org. Retrieved February 18, 2016.

nyctrackbook.com

"New Elevated Line Opened for Queens" (PDF). The New York Times. September 26, 1915. Retrieved September 28, 2007.
"First Leg of Rockaways Transit Opened at Cost of $10,154,702" (PDF). The New York Times. April 30, 1956. Retrieved June 29, 2015.
Freeman, Ira Henry (June 28, 1956). "Rockaway Trains to Operate Today" (PDF). The New York Times. Retrieved June 29, 2015.

"A Lefferts". stationreporter.net. October 30, 2013. Archived from the original on October 30, 2013. Retrieved February 18, 2016.

"Glossary". Second Avenue Subway Supplemental Draft Environmental Impact Statement (SDEIS) (PDF). Vol. 1. Metropolitan Transportation Authority. March 4, 2003. pp. 1–2. Archived from the original (PDF) on February 26, 2021. Retrieved January 1, 2021.
"BMT Lines, Rapid Transit Division" (GIF). www.nycsubway.com. 1924. Archived from the original on October 12, 2007. Retrieved November 9, 2007.
"Rapid Transit Lines of the New York City Transit System" (GIF). www.nycsubway.com. 1948. Archived from the original on October 12, 2007. Retrieved November 9, 2007.
"Official New York City Subway Map and Station Guide" (GIF). www.nycsubway.com. 1959. Archived from the original on October 12, 2007. Retrieved November 9, 2007.
Cox, Jeremiah. "111 St-Greenwood Avenue (A except Late Nights, S-Late Night Shuttle to Lefferts Blvd) - The SubwayNut". www.subwaynut.com. Archived from the original on February 16, 2016. Retrieved February 18, 2016.
"Brooklyn-bound trains skip 80 St and 111 St". web.mta.info. Archived from the original on December 31, 2015. Retrieved February 18, 2016.
"Brooklyn-bound 111 St and 80 St A Line Stations To Close for Three Months for Renewal" (Press release). Metropolitan Transit Authority. December 23, 2015. Archived from the original on December 25, 2015. Retrieved February 18, 2016.
"A Lefferts". stationreporter.net. October 30, 2013. Archived from the original on October 30, 2013. Retrieved February 18, 2016.