O'SULLIVIAN, P. (1981). Geographical economics. John Wiley and Sons.
Chicago-čujuhus (17. p.)O'SULLIVIAN, Patrick. Geographical Economics. New York: John Wiley and Sons, 1981.
MLA-čujuhus (9. p.)O'SULLIVIAN, Patrick. Geographical Economics. John Wiley and Sons, 1981.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.