APA (7th ed.) Citation

British Library. (1644). Mercurius &c. [publisher not identified].

Chicago Style (17th ed.) Citation

British Library. Mercurius &c. [London]: [publisher not identified], 1644.

MLA (9th ed.) Citation

British Library. Mercurius &c. [publisher not identified], 1644.

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