@book{36038,
	author = {Seraj, Kazi Faisal Bin. and BRAC},
	title = {Willingness to pay for improved sanitation services and its implication on demand responsive approach of BRAC water, sanitation and hygiene programme /},
	publisher = {Research and Evaluation Division, BRAC,},
	year = {2008.},
	series = {RED working paper ;},
	address = {Dhaka :}
}