HOWARD , J. (1997). I CAN READ ABOUT FOSSILS. TROLL ASSOCIATES.
Chicago-čujuhus (17. p.)HOWARD , JOHN. I CAN READ ABOUT FOSSILS. USA: TROLL ASSOCIATES, 1997.
MLA-čujuhus (9. p.)HOWARD , JOHN. I CAN READ ABOUT FOSSILS. TROLL ASSOCIATES, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.