Lua APA (7ú heag.)
Haeger, J. D. (1991). John Jacob Astor: Business and Finance in the Early Republic. Wayne State University Press.
Lua i Stíl Chicago (17ú heag.)
Haeger, John D. John Jacob Astor: Business and Finance in the Early Republic. Detroit: Wayne State University Press, 1991.
Lua MLA (9ú heag.)
Haeger, John D. John Jacob Astor: Business and Finance in the Early Republic. Wayne State University Press, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.