@book{82399,
	author = {Howitt, Dennis, and Cramer, Duncan,},
	title = {Research methods in psychology /},
	publisher = {Pearson,},
	year = {2020.},
	address = {Hoboken :},
	edition = {Sixth Edition.},
	note = {Revised edition of the authors' Introduction to research methods in psychology, [2017]}
}