Demate, C. J. M., & Yap, V. (2010). Determinants of the sustainability of duty free shops in clark freeport zone. University of the Philippines Diliman Extension Program in Pampanga.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিDemate, Cielo Jane M., এবং Virginia Yap. Determinants of the Sustainability of Duty Free Shops in Clark Freeport Zone. Pampanga: University of the Philippines Diliman Extension Program in Pampanga, 2010.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিDemate, Cielo Jane M., এবং Virginia Yap. Determinants of the Sustainability of Duty Free Shops in Clark Freeport Zone. University of the Philippines Diliman Extension Program in Pampanga, 2010.
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