@thesis{thesis,
		author={FERY ISTIANA  NIM. 372002087},
		title ={THE TENTH GRADE STUDENTS' DIFFICULTIES IN USING MODALS AT
SMA NEGERI 1 SUNGAI LILIN},
		year={2007},
		url={http://repository.um-palembang.ac.id/id/eprint/1145/},
		abstract={}
		}