APA (7th ed.) Citation

Backhouse, J., & De Hamel, C. (1988). The Becket leaves. British Library.

Chicago Style (17th ed.) Citation

Backhouse, Janet, and Christopher De Hamel. The Becket Leaves. [Place of publication not identified]: British Library, 1988.

MLA (9th ed.) Citation

Backhouse, Janet, and Christopher De Hamel. The Becket Leaves. British Library, 1988.