APA (7th ed.) Citation

Crew, N. (1785). The penman's guide by N. Crew. Sold by the author.

Chicago Style (17th ed.) Citation

Crew, Nathaniel. The Penman's Guide by N. Crew. [London]: Sold by the author, 1785.

MLA (9th ed.) Citation

Crew, Nathaniel. The Penman's Guide by N. Crew. Sold by the author, 1785.