Eñano, R. S. (1981). Diesel engine deletion rule defined anew. Bulletin Today.
Lua i Stíl Chicago (17ú heag.)Eñano, Ray S. "Diesel Engine Deletion Rule Defined Anew." Bulletin Today 1981.
Lua MLA (9ú heag.)Eñano, Ray S. "Diesel Engine Deletion Rule Defined Anew." Bulletin Today, 1981.
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