ROGER , A. (1997). YELLOW HIPPO: LITTLE GIANT SERIES.
Chicago-čujuhus (17. p.)ROGER , ALAN. YELLOW HIPPO: LITTLE GIANT SERIES. 1997.
MLA-čujuhus (9. p.)ROGER , ALAN. YELLOW HIPPO: LITTLE GIANT SERIES. 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.