MCCOLVIN, L. R. The public library system of Great Britain: A report on its present condition with proposals for post-war reorganization. The Library Association.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিMCCOLVIN, Lionel R. The Public Library System of Great Britain: A Report on Its Present Condition with Proposals for Post-war Reorganization. The Library Association.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিMCCOLVIN, Lionel R. The Public Library System of Great Britain: A Report on Its Present Condition with Proposals for Post-war Reorganization. The Library Association.
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