@unpublished{repository29691,
            note = {Unpublished},
           title = {Teknik Pengukuran Severitas Regurgitasi Aorta Dengan Menggunakan Ekokardiografi},
          school = {Universitas Muhammadiyah Prof. DR. Hamka},
            year = {2020},
             url = {http://repository.uhamka.ac.id/id/eprint/29691/},
          author = {Silvia Anggraini, Silvia and Zul Effendi, Zul and Erlina Pudyastuti, Erlina}
}