BERNTHAL, M. S. (2009). BARNEY'S BOOK OF SHAPES.
Chicago-čujuhus (17. p.)BERNTHAL, MARK. S. BARNEY'S BOOK OF SHAPES. 2009.
MLA-čujuhus (9. p.)BERNTHAL, MARK. S. BARNEY'S BOOK OF SHAPES. 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.