@unpublished{repository45326,
           title = {Surat Tugas \& Sertifikat Semnas toxic Positivity},
       publisher = {Universitas Muhammadiyah Prof. DR. Hamka},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/45326/},
          author = {Nuraini, Nuraini}
}