APA (7th ed.) Citation

(1980). Guide to government department and other libraries (24. ed.). <<The>> British Library.

Chicago Style (17th ed.) Citation

Guide to Government Department and Other Libraries. 24. ed. London: <<The>> British Library, 1980.

MLA (9th ed.) Citation

Guide to Government Department and Other Libraries. 24. ed. <<The>> British Library, 1980.