Cita APA (7th ed.)

Brockmann Josef M. (2016). Grid System: In Graphic Design. Niggli.

Cita Chicago (17th ed.)

Brockmann Josef M. Grid System: In Graphic Design. NIGGLI: Niggli, 2016.

Cita MLA (9th ed.)

Brockmann Josef M. Grid System: In Graphic Design. Niggli, 2016.