FIFTEEN... (1979). Fifteen thousand hours: Secondary schools and their effects on children. Open Books.
Chicago Style CitationFIFTEEN... Fifteen Thousand Hours: Secondary Schools and Their Effects On Children. Open Books, 1979.
MLA CitationFIFTEEN... Fifteen Thousand Hours: Secondary Schools and Their Effects On Children. Open Books, 1979.
Warning: These citations may not always be 100% accurate.