@book{25650,
	author = {O'Brien, James J.,},
	title = {The historical and cultural heritage of the Bikol people /},
	publisher = {[Publisher not identified],},
	year = {1993.},
	address = {[Place of publication not identified] :},
	edition = {Third edition.},
	note = {1st edition - 1966
2nd edition - 1968
Supplement - 1970}
}