@unpublished{repository19432,
           title = {Webinar Mengabdi Tanpa Batas},
            note = {Unpublished},
       publisher = {LPPM Universitas Muhammdiyah Prof. DR. Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/19432/},
          author = {Yuni, Astuti}
}