@book{5109,
	author = {Nanda, Ravindra.},
	title = {Esthetics and biomechanics in orthodontics},
	publisher = {ELSEVIER,},
	year = {2017.},
	address = {New Delhi,},
	edition = {2nd ed.},
	url = {https://books.google.com.pk/books?id=O7GmtQEACAAJ&dq=Esthetics+and+biomechanics+in+orthodontics&hl=en&sa=X&redir_esc=y}
}