Piechowiak, A. B. (1976). Complete guide to the elementary learning center. West Nyack, N.Y: Parker Pub. Co.
Trích dẫn kiểu ChicagoPiechowiak, Ann B. Complete Guide to the Elementary Learning Center. West Nyack, N.Y: Parker Pub. Co, 1976.
MLA CitationPiechowiak, Ann B. Complete Guide to the Elementary Learning Center. West Nyack, N.Y: Parker Pub. Co, 1976.
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