@unpublished{repository41369,
           title = {ST \& Sertifikat Pengembang AR,VR,XR UNIV. TERBUKA},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/41369/},
          author = {Soebagyo, Joko}
}