Philippine Electronics and Telecommunications Federation. (1980). Philippine electronics and telecommunications industry yearbook, 1980-. Philippine Electronics and Telecommunications Federation.
Chicago-referens (17:e uppl.)Philippine Electronics and Telecommunications Federation. Philippine Electronics and Telecommunications Industry Yearbook, 1980-. Quezon City: Philippine Electronics and Telecommunications Federation, 1980.
MLA-referens (9:e uppl.)Philippine Electronics and Telecommunications Federation. Philippine Electronics and Telecommunications Industry Yearbook, 1980-. Philippine Electronics and Telecommunications Federation, 1980.
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