APA (7th ed.) Citation

Walker, J. (1800). Letter to Colonel Dirom, Quarter Master General in Scotland, on the discovery of coal. [s.n.].

Chicago Style (17th ed.) Citation

Walker, John. Letter to Colonel Dirom, Quarter Master General in Scotland, on the Discovery of Coal. S.l: [s.n.], 1800.

MLA (9th ed.) Citation

Walker, John. Letter to Colonel Dirom, Quarter Master General in Scotland, on the Discovery of Coal. [s.n.], 1800.