Spencer, M. B., Agar, F., Jr, & Safer, C. (1960). Blind children in family and community. University of Minnesota Press.
Lua i Stíl Chicago (17ú heag.)Spencer, Marietta B., Frank Agar, Jr, agus Carol Safer. Blind Children in Family and Community. Minneapolis: University of Minnesota Press, 1960.
Lua MLA (9ú heag.)Spencer, Marietta B., et al. Blind Children in Family and Community. University of Minnesota Press, 1960.
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