Butts, A. Metallurgical problems (2a ed.).
Cita Chicago (17th ed.)Butts, Allison. Metallurgical Problems. 2a ed.
Cita MLA (8th ed.)Butts, Allison. Metallurgical Problems. 2a ed.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)