Cancro, R. (1971). Intelligence: Genetic and environmental influences. Grune & Stratton.
Lua i Stíl Chicago (17ú heag.)Cancro, Robert. Intelligence: Genetic and Environmental Influences. New York: Grune & Stratton, 1971.
Lua MLA (9ú heag.)Cancro, Robert. Intelligence: Genetic and Environmental Influences. Grune & Stratton, 1971.
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