Cita APA (7th ed.)
Harwood, H. H. (2003). Invisible giants: The empires of Cleveland's Van Sweringen brothers. Indiana University Press.
Cita Chicago (17th ed.)
Harwood, Herbert H. Invisible Giants: The Empires of Cleveland's Van Sweringen Brothers. Bloomington and Indianapolis: Indiana University Press, 2003.
Cita MLA (9th ed.)
Harwood, Herbert H. Invisible Giants: The Empires of Cleveland's Van Sweringen Brothers. Indiana University Press, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.