Cita APA (7a ed.)

Bogdandy, L. v., & Engell, H. J. (1971). The reduction of iron ores: Scientific basis and technology. Springer-Verlag.

Cita Chicago Style (17a ed.)

Bogdandy, Ludwig von, y H. J. Engell. The Reduction of Iron Ores: Scientific Basis and Technology. Berlin: Springer-Verlag, 1971.

Cita MLA (8a ed.)

Bogdandy, Ludwig von, y H. J. Engell. The Reduction of Iron Ores: Scientific Basis and Technology. Springer-Verlag, 1971.