Joseph J. Hobbs. (2017). Fundamental of World Regional Geography (4th ed.). Cengage.
Chicago-čujuhus (17. p.)Joseph J. Hobbs. Fundamental of World Regional Geography. 4th ed. Singapore: Cengage, 2017.
MLA-čujuhus (9. p.)Joseph J. Hobbs. Fundamental of World Regional Geography. 4th ed. Cengage, 2017.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.