Vischer, T., & Federle, H. (1988). Helmut Federle: Art should be a clear alternative to the Zeitgeist and velocity of modern life. Flash Art.
Citazione stile Chigago Style (17a edizione)Vischer, Theodora, e Helmut Federle. "Helmut Federle: Art Should Be a Clear Alternative to the Zeitgeist and Velocity of Modern Life." Flash Art 1988.
Citatione MLA (8a ed.)Vischer, Theodora, e Helmut Federle. "Helmut Federle: Art Should Be a Clear Alternative to the Zeitgeist and Velocity of Modern Life." Flash Art, 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.