Lawday, C. I-Spy: Course Book 3 (1a. ed.). Oxford University Press.
Chicago-čujuhus (17. p.)Lawday, Cathy. I-Spy: Course Book 3. 1a. ed. New York: Oxford University Press.
MLA-čujuhus (9. p.)Lawday, Cathy. I-Spy: Course Book 3. 1a. ed. Oxford University Press.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.