Great Britain. Forestry Commission. (1948). Snowdonia. H.M. Stationery Off..
Cita Chicago (17th ed.)Great Britain. Forestry Commission. Snowdonia. London: H.M. Stationery Off., 1948.
Cita MLA (8th ed.)Great Britain. Forestry Commission. Snowdonia. H.M. Stationery Off., 1948.
Atenció: Aquestes cites poden no estar 100% correctes.