Faktor pengaruh sumber daya nasabah terhadap non performing financing koperasi jasa keuangan syariah studi kasus pada KJKS ABC di jawa timur tahun 2011) = Factors that influence customer resources against non performing financing islamic financial service cooperative ABC KJKS (case study in east java in 2011) / Muhammad Panji Soenyono - Muhammad Panji Soenyono, author (2013)