Mercado, D. I. N. (2009). Customer service competencies of masseurs service with visual impairment.
Čikaški stil citiranja (17. izdanje)Mercado, Dulce Imelda Nicolas. Customer Service Competencies of Masseurs Service with Visual Impairment. 2009.
MLA način citiranja (9. izdanje)Mercado, Dulce Imelda Nicolas. Customer Service Competencies of Masseurs Service with Visual Impairment. 2009.
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