Brockmann Josef M. (2016). Grid System: In Graphic Design. Niggli.
Chicago-čujuhus (17. p.)Brockmann Josef M. Grid System: In Graphic Design. NIGGLI: Niggli, 2016.
MLA-čujuhus (9. p.)Brockmann Josef M. Grid System: In Graphic Design. Niggli, 2016.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.