Soutter, L., & Wölfli, A. (1989). Louis Soutter, 1871 - 1942 - Adolf Wölfli, 1864 - 1930: [Oktober - November 1989] / Galerie Michael Haas. Galerie Michael Haas.
Cita Chicago (17th ed.)Soutter, Louis, i Adolf Wölfli. Louis Soutter, 1871 - 1942 - Adolf Wölfli, 1864 - 1930: [Oktober - November 1989] / Galerie Michael Haas. Berlin: Galerie Michael Haas, 1989.
Cita MLA (8th ed.)Soutter, Louis, i Adolf Wölfli. Louis Soutter, 1871 - 1942 - Adolf Wölfli, 1864 - 1930: [Oktober - November 1989] / Galerie Michael Haas. Galerie Michael Haas, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.