Source: http://repositorio.ug.edu.ec/bitstream/redug/15240/1/%E2%80%9CAN%C3%81LISIS%20DE%20LAS%20REDES%20SOCIALES%20Y%20SU%20INFLUENCIA%20CON%20LOS%20MENSAJES%20COMUNCACIONALES%20EN%20LOS%20ESTUDIANT.pdf