Hayward, C. R. An outline of metallurgical practice (2nd ed.).
Cita Chicago (17th ed.)Hayward, Carle R.. An Outline of Metallurgical Practice. 2nd ed. New York : Van Nostrand Co., c1940.
Cita MLA (8th ed.)Hayward, Carle R.. An Outline of Metallurgical Practice. 2nd ed.
Atenció: Aquestes cites poden no estar 100% correctes.