@book{4601,
	author = {Holden, Joseph,},
	title = {An introduction to physical geography and the environment /},
	publisher = {Pearson Prentice Hall,},
	year = {2017.},
	address = {Harlow, England ;},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0814/2008013319.html}
}