Geahča maid: Scott's Standard Postage Stamp Catalogue 1973 /
Fáddá: Timbres postales
Dahkki: Hatcher, James B.
- Scott´s Standard Postage Stamp Catalogue : The Encyclopedia of Philately 1965 /
- Scott´s Standard Postage Stamp Catalogue : The Encyclopedia of Philately 1970 /
- Scott's Standard Postage Stamp Catalogue 1978 /
- Scott's Standard Postage Stamp Catalogue 1979 /
- Scott's Standard Postage Stamp Catalogue : 1982 /
- Scott's Standard Postage Stamp Catalogue 1973 /