@unpublished{ITNYREPOID3843,
       publisher = {ITNY},
           title = {Silimarity: Stratigraphy of contact semilir and nglanggran formation on the pilangrejo, nglipar, gunung kidul},
          author = {Herning Dyah Kusuma Wijayanti},
             url = {https://repository.itny.ac.id/id/eprint/3843/}
}