APA-viite (7. p.)

Great Britain. Fuel Research Board. (1939). The Northumberland and Durham Coalfield: Northumberland area : the Bensham Seam. H.M.S.O..

Chicago-viite (17. p.)

Great Britain. Fuel Research Board. The Northumberland and Durham Coalfield: Northumberland Area : The Bensham Seam. London: H.M.S.O., 1939.

MLA-viite (8. p.)

Great Britain. Fuel Research Board. The Northumberland and Durham Coalfield: Northumberland Area : The Bensham Seam. H.M.S.O., 1939.