Tohutoro APA (7th ed.)
Heyn, E., & Bauer, O. (1926). Metallographie.
Tohutoru Kātū Chicago (17th ed.)
Heyn, Emil, me Oswald Bauer. Metallographie. Berlin, Leipzig, 1926.
Tohutoro MLA (9th ed.)
Heyn, Emil, me Oswald Bauer. Metallographie. 1926.
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