Brockmann Josef M. (2016). Grid System: In Graphic Design. Niggli.
Lua i Stíl Chicago (17ú heag.)Brockmann Josef M. Grid System: In Graphic Design. NIGGLI: Niggli, 2016.
Lua MLA (9ú heag.)Brockmann Josef M. Grid System: In Graphic Design. Niggli, 2016.
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