@book{3171,
	author = {Thorndike, Robert M. and Hagen, Elizabeth},
	title = {Measurement and Evaluation in Psychology and Education},
	publisher = {John Wiley & Sons,},
	year = {1969.},
	address = {New York :},
	edition = {3rd ed.},
	url = {https://books.google.com.pk/books?id=rRBKAAAAYAAJ&q=Measurement+and+evaluation+in+psychology+and+education&dq=Measurement+and+evaluation+in+psychology+and+education&hl=en&sa=X&redir_esc=y}
}