@unpublished{repository10601,
            year = {2021},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
           title = {Surat Bimtek penulisan Buku Referensi dan Monograf},
           month = {September},
             url = {http://repository.uhamka.ac.id/id/eprint/10601/},
          author = {Burhayani, Eni}
}