@unpublished{ITNYREPOID3780,
          author = {Listiyani Retno Astuti},
           title = {Bukti review korespondensi: The influence of physical properties on the compressive strength of the rock in the samigaluh area, kulon progo, Indonesia},
       publisher = {ITNY},
             url = {https://repository.itny.ac.id/id/eprint/3780/}
}