@book{121,
	author = {Cromwell, Leslie and Weibell, Fred J. },
	title = {Biomedical Instrumentation and Measurements},
	publisher = {Prentice-Hall,},
	year = {2014.},
	address = {Englewood Cliffs :},
	edition = {2nd ed.},
	url = {https://books.google.com.pk/books?id=ImGzoAEACAAJ&dq=9788120306530&hl=en&sa=X&ved=2ahUKEwjxtdGC9fH0AhXUa8AKHe0kCtwQ6AF6BAgGEAE}
}