Punzalan, R. G., & Ramos, R. B., Jr. Technology and productivity in the Philippines.
Lua i Stíl Chicago (17ú heag.)Punzalan, Raynalyn G., agus Roberto B. Ramos, Jr. Technology and Productivity in the Philippines.
Lua MLA (9ú heag.)Punzalan, Raynalyn G., agus Roberto B. Ramos, Jr. Technology and Productivity in the Philippines.
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