@thesis{thesis,
		author={Wibowo  Oeij Wahyu Lindawati},
		title ={A Case study on the different achievements of the English language education students of Sanata Dharma University in a sociolinguistics essay achievementtest due to the different cognitive levels of questions},
		year={1997},
		url={http://repository.usd.ac.id/10865/},
		abstract={}
		}