Sayers, W. C. B. (1950). An introduction to library classification: An introduction to library classification : theoretical, historical and practical with readings, exercises and examination papers (8 ed., revised.). London: Grafton & Co.
Chicago stil citiranjaSayers, W. C. Berwick. An introduction to library classification: An introduction to library classification : theoretical, historical and practical with readings, exercises and examination papers. 8 ed., revised. London: Grafton & Co, 1950.
MLA stil citiranjaSayers, W. C. Berwick. An introduction to library classification: An introduction to library classification : theoretical, historical and practical with readings, exercises and examination papers. 8 ed., revised. London: Grafton & Co, 1950.