@book{197341,
	author = {Babbie, Earl R. and Babbie, Earl R.},
	title = {The basics of social research},
	publisher = {Wadsworth Publishing},
	year = {1999.},
	address = {Belmont, Calif.},
	note = {Rev. ed. of: The practice of social research. 8th ed. 1998.}
}