@unpublished{ITNYREPOID3960,
           title = {Similarity: Nanggulan formation as a roof pendant at the central part of Kulon Progo Mountains, Yogyakarta, Indonesia},
          author = {. Winarti},
       publisher = {ITNY},
             url = {https://repository.itny.ac.id/id/eprint/3960/}
}