@book{4799,
	author = {John A. Dent},
	title = {A practical guide for Medical teachers},
	publisher = {Churchill Livingstone},
	year = {2005},
	address = {Edinburgh},
	edition = {2nd edition},
	url = {https://books.google.com.pk/books?id=HzRrAAAAMAAJ&pg=PA226&dq=9780443100833&hl=en&sa=X&ved=2ahUKEwj7ptiwtLj1AhWKEBQKHZByA3oQ6wF6BAgCEAE}
}