@book{41491,
	author = {Dittmar, M. and Ratnasingam, M.},
	title = {A comparative analysis of the psychological profile of institutionalised drug using population /},
	publisher = {Pusat Penyelidikan Dadah dan Ubat-ubatan,},
	year = {[1990]},
	address = {Pulau Pinang :}
}