Helm, D. (1993). The Assessment: The European Internal Market: The Next Steps.
Chicago-čujuhus (17. p.)Helm, D. The Assessment: The European Internal Market: The Next Steps. 1993.
MLA-čujuhus (9. p.)Helm, D. The Assessment: The European Internal Market: The Next Steps. 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.