Gutierrez, B. P. B. (2012). Diversification strategies of three large Philippine business groups. College of Business Administration, University of the Philippines.
Lua i Stíl Chicago (17ú heag.)Gutierrez, Ben Paul B. Diversification Strategies of Three Large Philippine Business Groups. Quezon City: College of Business Administration, University of the Philippines, 2012.
Lua MLA (9ú heag.)Gutierrez, Ben Paul B. Diversification Strategies of Three Large Philippine Business Groups. College of Business Administration, University of the Philippines, 2012.
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