(1972). Children today. Washington, D.C.: The Bureau : For sale by the Supt. for Docs., U.S. G.P.O..
Παραπομπή Chicago StyleChildren Today. Washington, D.C.: The Bureau : For sale by the Supt. for Docs., U.S. G.P.O., 1972.
Παραπομπή MLAChildren Today. Washington, D.C.: The Bureau : For sale by the Supt. for Docs., U.S. G.P.O., 1972.
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