Colbeck, J. (2023). Karin Putsch-Grassi. Neue Keramik.
Cita Chicago (17th ed.)Colbeck, John. "Karin Putsch-Grassi." Neue Keramik 2023.
Cita MLA (8th ed.)Colbeck, John. "Karin Putsch-Grassi." Neue Keramik, 2023.
Atenció: Aquestes cites poden no estar 100% correctes.