@book {24944,
	title = {Culturally modified trees of British Columbia: A handbook for the identification and recording of culturally modified trees},
	year = {2001},
	isbn = {0772644896; 9780772644893},
	url = {http://www.for.gov.bc.ca/hfd/pubs/docs/mr/Mr091/CMThandbook_cover-p16.pdf}
}
