Reyes, R. S. (1998). SSI: A valuable IBM business partner. Manila Bulletin.
Lua i Stíl Chicago (17ú heag.)Reyes, Ria S. "SSI: A Valuable IBM Business Partner." Manila Bulletin 1998.
Lua MLA (9ú heag.)Reyes, Ria S. "SSI: A Valuable IBM Business Partner." Manila Bulletin, 1998.
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