Gopsill, G., & Bessley, F. (1964). Practical geography: Exercises with modles and improvised equipment. Macmillan.
Chicago-čujuhus (17. p.)Gopsill, G.H, juo Frank Bessley. Practical Geography: Exercises with Modles and Improvised Equipment. London: Macmillan, 1964.
MLA-čujuhus (9. p.)Gopsill, G.H, juo Frank Bessley. Practical Geography: Exercises with Modles and Improvised Equipment. Macmillan, 1964.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.