Greenall, S. (1997). Reward: Elementary. Student's book. Macmillan Heinemann.
Chicago-čujuhus (17. p.)Greenall, Simon. Reward: Elementary. Student's Book. Oxford: Macmillan Heinemann, 1997.
MLA-čujuhus (9. p.)Greenall, Simon. Reward: Elementary. Student's Book. Macmillan Heinemann, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.