APA (7th ed.) Citation

British Library. (1979). The British Library general catalogue of printed books to 1975. Clive Bingley [etc.].

Chicago Style (17th ed.) Citation

British Library. The British Library General Catalogue of Printed Books to 1975. London [etc.]: Clive Bingley [etc.], 1979.

MLA (9th ed.) Citation

British Library. The British Library General Catalogue of Printed Books to 1975. Clive Bingley [etc.], 1979.

Warning: These citations may not always be 100% accurate.