Lua APA (7ú heag.)

(1999). Wordlwide business software piracy losses estimated at nearly $11 billion in 1998. Manila Bulletin.

Lua i Stíl Chicago (17ú heag.)

"Wordlwide Business Software Piracy Losses Estimated at Nearly $11 Billion in 1998." Manila Bulletin 1999.

Lua MLA (9ú heag.)

"Wordlwide Business Software Piracy Losses Estimated at Nearly $11 Billion in 1998." Manila Bulletin, 1999.

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