Cita APA (7th ed.)
Winchell, H. (1891). The Iron Ores of Minnesota.
Cita Chicago (17th ed.)
Winchell, H.V. The Iron Ores of Minnesota. Minneapolis, 1891.
Cita MLA (9th ed.)
Winchell, H.V. The Iron Ores of Minnesota. 1891.
Atenció: Aquestes cites poden no estar 100% correctes.