APA (7th ed.) Citation

British Library of Political and Economic Science, London. (1961). Classified catalogue of a collection of works on publishing and bookselling in the British Library of Political and Economic Science.

Chicago Style (17th ed.) Citation

British Library of Political and Economic Science, London. Classified Catalogue of a Collection of Works on Publishing and Bookselling in the British Library of Political and Economic Science. London, 1961.

MLA (9th ed.) Citation

British Library of Political and Economic Science, London. Classified Catalogue of a Collection of Works on Publishing and Bookselling in the British Library of Political and Economic Science. 1961.