Hay, A. (1973). Transport for the space economy: A geographical study. Macmillan.
Chicago-čujuhus (17. p.)Hay, Alan. Transport for the Space Economy: A Geographical Study. London: Macmillan, 1973.
MLA-čujuhus (9. p.)Hay, Alan. Transport for the Space Economy: A Geographical Study. Macmillan, 1973.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.