@book{2342,
	author = {Cawson A. R. and E.W. Odell},
	title = {Oral Pathology,},
	publisher = {Michael Parkinson, },
	year = {1999.},
	address = {Churcill Livingstone:,},
	url = {https://books.google.com.pk/books?id=HS96QgAACAAJ&dq=Oral+Pathology,+colour+guide&hl=en&sa=X&ved=2ahUKEwiY-4fOz5f1AhUhiv0HHV6-BGsQ6AF6BAgCEAI}
}