APA (7e ed.) Bronvermelding

Albers, J., Gaul, W., Knoebel, I., & Heymer, K. (2017). Cutting Edge: Josef Albers, Winfred Gaul, Imi Knoebel / [Text: Kay Heymer]. Galerie Ludorff.

Chicago (17e ed.) Bronvermelding

Albers, Josef, Winfred Gaul, Imi Knoebel, en Kay Heymer. Cutting Edge: Josef Albers, Winfred Gaul, Imi Knoebel / [Text: Kay Heymer]. Düsseldorf: Galerie Ludorff, 2017.

MLA (8e ed.) Bronvermelding

Albers, Josef, et al. Cutting Edge: Josef Albers, Winfred Gaul, Imi Knoebel / [Text: Kay Heymer]. Galerie Ludorff, 2017.