Keeffe, J. E., Lovie-Kitchin, J. E., Maclean, H., & Taylor, H. R. (1996). A simplified screening test for identifying people with low vision in developing countries. World Health Organization.
Chicago-tyylinen lähdeviittausKeeffe, J. E., J. E. Lovie-Kitchin, H. Maclean, ja H. R. Taylor. A Simplified Screening Test for Identifying People With Low Vision in Developing Countries. World Health Organization, 1996.
MLA-viiteKeeffe, J. E., J. E. Lovie-Kitchin, H. Maclean, ja H. R. Taylor. A Simplified Screening Test for Identifying People With Low Vision in Developing Countries. World Health Organization, 1996.
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