APA-čujuhus (7. p.)
de Blij, H. J., & Birdsall, S. S. (1978). Geography: Regions and concepts (2nd ed.). John Wiley.
Chicago-čujuhus (17. p.)
de Blij, Harm J., juo Stephen S. Birdsall. Geography: Regions and Concepts. 2nd ed. New York: John Wiley, 1978.
MLA-čujuhus (9. p.)
de Blij, Harm J., juo Stephen S. Birdsall. Geography: Regions and Concepts. 2nd ed. John Wiley, 1978.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.