Lugtu, J. G., & Villanueva, S. T. An evaluation of the duty free shops in Clark Special Economic Zone.
Lua i Stíl Chicago (17ú heag.)Lugtu, Jovy G., agus Shelley T. Villanueva. An Evaluation of the Duty Free Shops in Clark Special Economic Zone.
Lua MLA (9ú heag.)Lugtu, Jovy G., agus Shelley T. Villanueva. An Evaluation of the Duty Free Shops in Clark Special Economic Zone.
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