Tohutoro APA (7th ed.)
Gregg, J. The Alloys of Iron and Tungsten. McGraw-Hill.
Tohutoru Kātū Chicago (17th ed.)
Gregg, J.L. The Alloys of Iron and Tungsten. Nueva York, EUA: McGraw-Hill.
Tohutoro MLA (9th ed.)
Gregg, J.L. The Alloys of Iron and Tungsten. McGraw-Hill.
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