American Foundation for the Blind & Orr, A. L. (1992). Vision and aging: Crossroads for service delivery. American Foundation for the Blind.
芝加哥风格引文American Foundation for the Blind 与 Alberta L. Orr. Vision and Aging: Crossroads for Service Delivery. New York: American Foundation for the Blind, 1992.
MLA引文American Foundation for the Blind 与 Alberta L. Orr. Vision and Aging: Crossroads for Service Delivery. American Foundation for the Blind, 1992.
警告：这些引文格式不一定是100％准确.