(1974). Oskar Holweck. Heseler - Galerie moderner Kunst, Grafik-Edition.
Cita Chicago (17th ed.)Oskar Holweck. München: Heseler - Galerie moderner Kunst, Grafik-Edition, 1974.
Cita MLA (8th ed.)Oskar Holweck. Heseler - Galerie moderner Kunst, Grafik-Edition, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.