Analisis strategi Marketing Public Relations PT.Bank Rakyat Indonesia (Persero)Tbk, dalam mempromosikan kartu kredit BRI Platinum (studi kasus Sponsorship Event Jakarta Fashion Week 2011) = Public Relations Marketing strategy analysis of PT.Bank Rakyat Indonesia (Persero) Tbk, in promoting the BRI credit card Platinum (case studies Sponsorship Event Jakarta Fashion Week 2011)