Tohutoro APA (7th ed.)
LANGNESS, L., & LEVINE, H. (1987). LIFE HISTORIES OF MILDLY MENTALLY RETARDED PERSONS IN AMERICA SOCIETY. D. REIDEL.
Tohutoru Kātū Chicago (17th ed.)
LANGNESS, L.L, me H.G LEVINE. LIFE HISTORIES OF MILDLY MENTALLY RETARDED PERSONS IN AMERICA SOCIETY. DORDRECHT (NL): D. REIDEL, 1987.
Tohutoro MLA (9th ed.)
LANGNESS, L.L, me H.G LEVINE. LIFE HISTORIES OF MILDLY MENTALLY RETARDED PERSONS IN AMERICA SOCIETY. D. REIDEL, 1987.
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