Ellie Tragakes. (2019). Economics For The IB Diploma. Cambridge University Press.
Chicago-čujuhus (17. p.)Ellie Tragakes. Economics For The IB Diploma. Cambridge University Press, 2019.
MLA-čujuhus (9. p.)Ellie Tragakes. Economics For The IB Diploma. Cambridge University Press, 2019.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.