APA-viite (7. p.)

American Foundation for the Blind & Orr, A. L. (1992). Vision and aging: Crossroads for service delivery. American Foundation for the Blind.

Chicago-viite (17. p.)

American Foundation for the Blind ja Alberta L. Orr. Vision and Aging: Crossroads for Service Delivery. New York: American Foundation for the Blind, 1992.

MLA-viite (8. p.)

American Foundation for the Blind ja Alberta L. Orr. Vision and Aging: Crossroads for Service Delivery. American Foundation for the Blind, 1992.

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