Philips, R. N. The significance of language to the national development and international prestige of the Philippines [microform]. Photoduplication Service.
Čikaški stil citiranja (17. izdanje)Philips, Robert Newton. The Significance of Language to the National Development and International Prestige of the Philippines [microform]. Quezon City: Photoduplication Service.
MLA način citiranja (9. izdanje)Philips, Robert Newton. The Significance of Language to the National Development and International Prestige of the Philippines [microform]. Photoduplication Service.
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