@book{53979,
	author = {Valkenburg, Mac E. Van.},
	title = {Network analysis /},
	publisher = {Prentice Hall College Div,},
	year = {2010.},
	address = {New Delhi:},
	edition = {3rd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0136110959/chopaconline-20}
}