@thesis{thesis,
		author={Prasetyo  Agustinus Hardi},
		title ={A Study on the Mastery of the Tenses and Constructions With Future Meaning among the Third Semester Students of the English Language Education Study Programme of Sanata Dharma University},
		year={1999},
		url={http://repository.usd.ac.id/10902/},
		abstract={}
		}