@book{4074,
	author = {Evans, William Charles},
	title = {Trease and Evans Pharmacognosy /},
	publisher = {Saunders/Elsevier ,},
	year = {2009 .},
	address = {Edinburgh :},
	edition = {16th ed.},
	url = {https://books.google.com.pk/books?id=l7pkTFyY428C&printsec=frontcover&dq=Trease+and+Evans%27+pharmacognosy&hl=en&sa=X&redir_esc=y#v=onepage&q=Trease%20and%20Evans'%20pharmacognosy&f=false}
}