@book{5609,
	author = {Hetherington, Stephen},
	title = {How to know :},
	publisher = {John Wiley & Sons,},
	year = {c 2011.},
	address = {Hoboken, N. J. :},
	url = {https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/9781118083178?download=true}
}