Crabb, J., & Joly, J. R. (1832). The Gipsies' advocate: Or observations on the origin, character, manners, and habits, of the English Gipsies (3d ed., with additions.). Sold by Nisbet.

Crabb, James, and Jaspar Robert Joly. The Gipsies' Advocate: Or Observations on the Origin, Character, Manners, and Habits, of the English Gipsies. 3d ed., with additions. Sold by Nisbet, 1832.