APA (7 ম সংস্করণ) উদ্ধৃতি

(1929). An introduction to library classification, theoretical, historical and practical, with readings, exercises and examination papers, by W.C. Berwick Sayers.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

An Introduction to Library Classification, Theoretical, Historical and Practical, with Readings, Exercises and Examination Papers, by W.C. Berwick Sayers. 1929.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

An Introduction to Library Classification, Theoretical, Historical and Practical, with Readings, Exercises and Examination Papers, by W.C. Berwick Sayers. 1929.