APA (7th ed.) Citation

British Library. (1981). The British Library general catalogue of printed books. Bingley [u.a.].

Chicago Style (17th ed.) Citation

British Library. The British Library General Catalogue of Printed Books. London: Bingley [u.a.], 1981.

MLA (9th ed.) Citation

British Library. The British Library General Catalogue of Printed Books. Bingley [u.a.], 1981.