National Congress on Industry and Energy Research (1st : 1981 : Mnaila). (1981). Proceedings [of the] First National Congress on Industry and Energy Research, 1-2 December 1981m, Manila Peninsula Hotel. National Science Development Board.
Lua i Stíl Chicago (17ú heag.)National Congress on Industry and Energy Research (1st : 1981 : Mnaila). Proceedings [of the] First National Congress on Industry and Energy Research, 1-2 December 1981m, Manila Peninsula Hotel. [Bicutan, Tagig]: National Science Development Board, 1981.
Lua MLA (9ú heag.)National Congress on Industry and Energy Research (1st : 1981 : Mnaila). Proceedings [of the] First National Congress on Industry and Energy Research, 1-2 December 1981m, Manila Peninsula Hotel. National Science Development Board, 1981.