@unpublished{repository30515,
           title = {Praktikum Kimia Organik 2021},
       publisher = {Universitas Muhammadiyah Prof. DR HAMKA},
            note = {Unpublished},
          author = {Hariyanti, Hariyanti},
             url = {http://repository.uhamka.ac.id/id/eprint/30515/}
}