@book{22330,
	author = {Opik, Helgi, and Rolfe, Stephen A.},
	title = {The physiology of flowering plants (Electronic Book)},
	publisher = {Cambridge University Press,},
	year = {2012},
	address = {Cambridge ;},
	edition = {4th ed.},
	url = {https://doi.org/10.1017/CBO9781139164450}
}