@misc{repository2042,
           title = {Artikel Penelitian Optimasi Ultrasonik ekstrak Daun Kopi},
            year = {2020},
           month = {April},
            note = {Submitted},
       publisher = {Universitas Muhammadiyah Prof Dr Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/2042/},
          author = {Fatmawati, Sofia and Bariroh, Tahyatul}
}