APA (7th ed.) Citation

Davenport, A. N. (1989). James Watt and the patent system. British Library.

Chicago Style (17th ed.) Citation

Davenport, A. N. James Watt and the Patent System. [London]: British Library, 1989.

MLA (9th ed.) Citation

Davenport, A. N. James Watt and the Patent System. British Library, 1989.

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