Hardy, Agustya, 		Suharto, S, AND 		Trapsilasiwi, Dinawati.
" PENGEMBANGAN LEMBAR KERJA SISWA (LKS) POKOK BAHASAN  PERBANDINGAN UNTUK SMP KELAS VII BERSTANDAR NCTM  (NATIONAL COUNCIL OF TEACHERS OF MATHEMATICS)" <em>Kadikma</em> [Online], Volume 5 Number 2 (1 August 2014)