@article{UNY27,
          author = {Nugroho Agung},
           title = {Mental Training Perguruan Pencak Silat Merpati Putih},
         journal = {Mental Training Merpati Putih},
       publisher = {Pengprov IPSI DIY},
             url = {http://eprints.uny.ac.id/27/}
}