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Lua i Stíl Chicago (17ú heag.)Sabio, Ralph A. "Internationalization of Higher Education Institutions in the Philippines: Current Trends and Challenges." The Scholastican Journal 2012.
Lua MLA (9ú heag.)Sabio, Ralph A. "Internationalization of Higher Education Institutions in the Philippines: Current Trends and Challenges." The Scholastican Journal, 2012.
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