Ahern, C. (2009). The book of tomorrow. Harper Collins.
Chicago-čujuhus (17. p.)Ahern, Cecelia. The Book of Tomorrow. London: Harper Collins, 2009.
MLA-čujuhus (9. p.)Ahern, Cecelia. The Book of Tomorrow. Harper Collins, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.