@unpublished{ITNYREPOID3961,
           title = {Bukti review korespondensi : 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/3961/}
}