Template:Cite flatiron
Alexiou, Alice Sparberg (2010). The Flatiron: The New York Landmark and the Incomparable City that Arose With It. New York: Thomas Dunne/St. Martin's. ISBN 978-0-312-38468-5.
Alexiou, Alice Sparberg (2010). The Flatiron: The New York Landmark and the Incomparable City that Arose With It. New York: Thomas Dunne/St. Martin's. ISBN 978-0-312-38468-5.