@book{213,
	author = {Sigelman, Carol K. and Rider, Elizabeth A.},
	title = {Life-span human development},
	publisher = {Wadsworth Cengage Learning ,;},
	year = {2009.},
	address = {Australia .;},
	edition = {6th Ed.},
	url = {https://books.google.com.pk/books/about/Life_Span_Human_Development.html?id=Ng1tDwAAQBAJ&printsec=frontcover&source=kp_read_button&hl=en&redir_esc=y#v=onepage&q&f=false}
}