@book{6113,
	author = {Bernard J. Turnock},
	title = {Essentials of public health},
	publisher = {Jones & Bartlett Learning,},
	year = {2012.},
	address = {Massachusetts ;},
	edition = {2nd ed.},
	url = {https://books.google.com.pk/books?id=6vTKbnwaw2cC&pg=RA2-PA1&dq=9781449600228&hl=en&sa=X&ved=2ahUKEwjFkPSE5-_2AhXBlqQKHegIATYQ6AF6BAgCEAI#v=onepage&q=9781449600228&f=false}
}