@unpublished{repository2400,
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
           title = {Praktikum Biokimia Kelas H1},
            note = {Unpublished},
          author = {Hanifah, Rahmi},
             url = {http://repository.uhamka.ac.id/id/eprint/2400/}
}