(1978). Symbols for tourist guides, maps, and country side recreation. [London] : British Tourist Anthority.
Lua i Stíl Chicago (17ú heag.)Symbols for Tourist Guides, Maps, and Country Side Recreation. [London] : British Tourist Anthority, 1978.
Lua MLA (9ú heag.)Symbols for Tourist Guides, Maps, and Country Side Recreation. [London] : British Tourist Anthority, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.