@unpublished{repository17687,
          volume = {2},
            year = {2020},
           title = {BUKU BLOK 4.3

KESEHATAN MASYARAKAT DAN

KESEHATAN KERJA 2},
       publisher = {Faculty of Medicine Muhammadiyah University of Prof. Dr. HAMKA},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/17687/},
          author = {Ira Wahyuni, Ira}
}