Rosen, G. (1957). Five Hundred Over Sixty: A Community Survey on Aging.
Citação norma ChicagoRosen, George. Five Hundred Over Sixty: A Community Survey On Aging. 1957.
MLA引文Rosen, George. Five Hundred Over Sixty: A Community Survey On Aging. 1957.
警告：這些引文格式不一定是100％准確.