APA (7th ed.) Citation

(1977). William Roy: 1726 - 1790 ; pioneer of the Ordnance Survey. British Museum Publ. [u.a.].

Chicago Style (17th ed.) Citation

William Roy: 1726 - 1790 ; Pioneer of the Ordnance Survey. London: British Museum Publ. [u.a.], 1977.

MLA (9th ed.) Citation

William Roy: 1726 - 1790 ; Pioneer of the Ordnance Survey. British Museum Publ. [u.a.], 1977.