Cita APA (7th ed.)
Haeger, J. D. (1991). John Jacob Astor: Business and Finance in the Early Republic. Wayne State University Press.
Cita Chicago (17th ed.)
Haeger, John D. John Jacob Astor: Business and Finance in the Early Republic. Detroit: Wayne State University Press, 1991.
Cita MLA (9th ed.)
Haeger, John D. John Jacob Astor: Business and Finance in the Early Republic. Wayne State University Press, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.