Roma Gans. (1996). How Do Birds Find Their Way? (Let's-Read-and-Find-Out Science 2). HarperCollins.
Chicago-čujuhus (17. p.)Roma Gans. How Do Birds Find Their Way? (Let's-Read-and-Find-Out Science 2). HarperCollins, 1996.
MLA-čujuhus (9. p.)Roma Gans. How Do Birds Find Their Way? (Let's-Read-and-Find-Out Science 2). HarperCollins, 1996.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.