@book{4975,
	author = {Newman, Michael G.},
	title = {Carranza's Clinical Periodontology},
	publisher = {ELSEVIER,},
	year = {2015.},
	address = {St. Lious :},
	edition = {12th ed.},
	url = {https://books.google.com.pk/books?id=CDKPBAAAQBAJ&dq=Carranza%27s+clinical+periodontology&hl=en&sa=X&redir_esc=y}
}