http://repository.uhamka.ac.id/id/eprint/17112/ The Effect Of Using Geometer's Sketchpad SoftwareTowards Students' Mathematical Communication Skills Subhan, ajiz awalludin http://repository.uhamka.ac.id/id/eprint/17112/1/The%20Effect%20Of%20Using%20Geometer%27s%20Sketchpad%20SoftwareTowards%20Students%27%20Mathematical%20Communication%20Skills.pdf Unduh!