Adams 1985, p. 13. Adams, Janet (1985). Rockefeller Center(PDF) (Report). New York City Landmarks Preservation Commission. Suarchyvuotas originalas(PDF) November 7, 2017.
Adams 1985, p. 13. Adams, Janet (1985). Rockefeller Center(PDF) (Report). New York City Landmarks Preservation Commission. Suarchyvuotas originalas(PDF) November 7, 2017.