Butlin, R. A. (1993). Historical geography: Through the gates of space and time. Arnold.
Chicago-čujuhus (17. p.)Butlin, Robin A. Historical Geography: Through the Gates of Space and Time. London: Arnold, 1993.
MLA-čujuhus (9. p.)Butlin, Robin A. Historical Geography: Through the Gates of Space and Time. Arnold, 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.