@unpublished{repository11999,
           title = {Peer reviu\_Development E-Module Three Variables Linear Equations System Based On Mathematic Communication},
            note = {Unpublished},
       publisher = {UHAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/11999/},
          author = {Samsul Maarif, SMF}
}