APA (7th ed.) Citation

British Library. (1641). Leycesters Common Wealth. [publisher not identified].

Chicago Style (17th ed.) Citation

British Library. Leycesters Common Wealth. [London?]: [publisher not identified], 1641.

MLA (9th ed.) Citation

British Library. Leycesters Common Wealth. [publisher not identified], 1641.

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