@book{1760,
	author = {Hornby, William Frederic. and Jones, Melvyn.},
	title = {An introduction to population geography /},
	publisher = {Cambridge University Press,},
	year = {1993.},
	address = {Cambridge [Cambridgeshire] ;},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/description/cam026/93235107.html}
}