APA (7e ed.) Bronvermelding

Westheider, O., Philipp, M., Elger, D., Hortolani, V., Bretz, J., Butin, H., . . . Zweite, A. (2018). Gerhard Richter: Abstraction / edited by Ortrud Westheider and Michael Philipp ; exhibition Dietmar Elger, Ortrud Westheider with Valerie Hortolani ; with contributions by Janice Bretz, Hubertus Butin, Dietmar Elger, Valerie Hortolani, Matthias Krüger, Kerstin Küster, Ortrud Westheider, Armin Zweite. Prestel.

Chicago (17e ed.) Bronvermelding

Westheider, Ortrud, Michael Philipp, Dietmar Elger, Valerie Hortolani, Janice Bretz, Hubertus Butin, Matthias Krüger, en Armin Zweite. Gerhard Richter: Abstraction / Edited by Ortrud Westheider and Michael Philipp ; Exhibition Dietmar Elger, Ortrud Westheider with Valerie Hortolani ; with Contributions by Janice Bretz, Hubertus Butin, Dietmar Elger, Valerie Hortolani, Matthias Krüger, Kerstin Küster, Ortrud Westheider, Armin Zweite. Munich ; London ; New York: Prestel, 2018.

MLA (8e ed.) Bronvermelding

Westheider, Ortrud, et al. Gerhard Richter: Abstraction / Edited by Ortrud Westheider and Michael Philipp ; Exhibition Dietmar Elger, Ortrud Westheider with Valerie Hortolani ; with Contributions by Janice Bretz, Hubertus Butin, Dietmar Elger, Valerie Hortolani, Matthias Krüger, Kerstin Küster, Ortrud Westheider, Armin Zweite. Prestel, 2018.