Valance, M. (2010). Kühe: Marc Valance. Ill. Magi Wechsler. Vontobel-Stiftung.
Cita Chicago (17th ed.)Valance, Marc. Kühe: Marc Valance. Ill. Magi Wechsler. Zürich: Vontobel-Stiftung, 2010.
Cita MLA (8th ed.)Valance, Marc. Kühe: Marc Valance. Ill. Magi Wechsler. Vontobel-Stiftung, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.