@article{UNY24331,
          author = {. Nurina Happy},
            year = {2014},
         journal = {International Seminar on Innovation in Mathematics and Mathematics Education},
           title = {The Effectiveness Of Pbl On Mathematical Creative Thinking Skills And Self-Esteem Of Junior High School Students},
       publisher = {Departement of Mathematics Education Faculty of Mathematics and Natural Science Yogyakarta State University},
             url = {http://eprints.uny.ac.id/24331/}
}