Howe, H. M. (1891). The metallurgy of steel (2d ed., rev. and enl.). Scientific Pub. Co..
Lua i Stíl Chicago (17ú heag.)Howe, Henry Marion. The Metallurgy of Steel. 2d ed., rev. and enl. New York: Scientific Pub. Co., 1891.
Lua MLA (8ú heag.)Howe, Henry Marion. The Metallurgy of Steel. 2d ed., rev. and enl. Scientific Pub. Co., 1891.
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