APA (7th ed.) Zitazioa
Hillstrom, L. C. (2009). The muckrakers and the Progressive Era. Omnigraphics, Inc..
Chicago Style (17th ed.) Zitazioa
Hillstrom, Laurie Collier. The Muckrakers and the Progressive Era. Detroit, MI: Omnigraphics, Inc., 2009.
MLA (9th ed.) Zitazioa
Hillstrom, Laurie Collier. The Muckrakers and the Progressive Era. Omnigraphics, Inc., 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.