(1972). Growth poles and regional policies: A seminar. Mouton.
Chicago-čujuhus (17. p.)Growth Poles and Regional Policies: A Seminar. The Hague: Mouton, 1972.
MLA-čujuhus (9. p.)Growth Poles and Regional Policies: A Seminar. Mouton, 1972.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.