@book{4679,
	author = {Tyldesley, W R.},
	title = {A colour atlas of orofacial disease},
	publisher = {Wolf Publishing Ltd,},
	year = {1991.},
	address = {London,},
	edition = {2nd ed. },
	url = {https://books.google.com.pk/books?id=R-NEPgAACAAJ&dq=A+colour+atlas+of+orofacial+disease&hl=en&sa=X&redir_esc=y}
}