Não informado. (1955). Arts and Activities. Publishers Development Corporation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Arts and Activities. San Diego, Calif: Publishers Development Corporation, 1955.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Arts and Activities. Publishers Development Corporation, 1955.
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