@article {39,
	title = {Contributions toward a flora of Panama},
	journal = { Annals of the Missouri Botanical Garden},
	volume = {25},
	year = {1938},
	chapter = {823},
	url = {http://biodiversitylibrary.org/page/16047334},
	author = {Robert Woodson Jr. and Russell Seibert}
}
@book {34,
	title = {The World of Magnolias},
	year = {1999},
	pages = {260},
	publisher = {Timber Press},
	organization = {Timber Press},
	edition = {Third edition},
	address = {Portland},
	author = {Dorothy Callaway}
}
