(1998). OECD economic surveys: Portugal 1998. OECD Publishing.
Chicago-čujuhus (17. p.)OECD Economic Surveys: Portugal 1998. Paris, France: OECD Publishing, 1998.
MLA-čujuhus (9. p.)OECD Economic Surveys: Portugal 1998. OECD Publishing, 1998.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.