Não informado. (1924). ASTM Bulletin. American Society for Testing and Materials.
Lua i Stíl Chicago (17ú heag.)Não informado. ASTM Bulletin. Philadelphia, Pa: American Society for Testing and Materials, 1924.
Lua MLA (8ú heag.)Não informado. ASTM Bulletin. American Society for Testing and Materials, 1924.
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