@book{16500,
	author = {Field, Marion},
	title = {Improve your written English},
	publisher = {How to Books,},
	year = {2009},
	series = {How to books},
	address = {Oxford :},
	edition = {5th ed. [rev. & updated]},
	note = {Previous ed.: 2003},
	url = {http://www.netlibrary.com.libraryumpsa.idm.oclc.org/urlapi.asp?action=summary&v=1&bookid=272950}
}