National Geographic Society. & Grosvenor, G. H. (1949). The British Isles: England, Scotland, Ireland and Wales, officially known as The United Kingdom of Great Britain and Northern Ireland and The Republic of Ireland. National Geographic Society.
Cita Chicago Style (17a ed.)National Geographic Society. y Gilbert Hovey Grosvenor. The British Isles: England, Scotland, Ireland and Wales, Officially Known as The United Kingdom of Great Britain and Northern Ireland and The Republic of Ireland. Washington: National Geographic Society, 1949.
Cita MLA (9a ed.)National Geographic Society. y Gilbert Hovey Grosvenor. The British Isles: England, Scotland, Ireland and Wales, Officially Known as The United Kingdom of Great Britain and Northern Ireland and The Republic of Ireland. National Geographic Society, 1949.
