@book {643,
	title = {Raven Biology of Plants},
	year = {2013},
	publisher = {W.H Freeman and Company Publishers },
	organization = {W.H Freeman and Company Publishers },
	edition = {Eighth Edition },
	address = {United States of America },
	author = {R. F. Evert and S. E. Eichhorn}
}
@book {619,
	title = {Biology of Plants},
	year = {2013},
	publisher = {W.H. Freeman and Company Publishers},
	organization = {W.H. Freeman and Company Publishers},
	edition = {Eighth Edition},
	address = {New York},
	author = {Raven, P. H. and Evert, R. F. and Eichhorn, S. E.}
}
@book {541,
	title = {Biology of Plants},
	series = {Biology of Plants},
	year = {2013},
	edition = {8th},
	author = {P. H. Raven and R. F. Evert and S. E. Eichhorn}
}
