@book{repository1238,
           title = {Kimia Dasar},
            year = {2018},
           month = {December},
       publisher = {EduCenter Indonesia},
             url = {http://repository.uhamka.ac.id/id/eprint/1238/},
          author = {Yusuf, Yusnidar},
            isbn = {9786025282355}
}