Cita APA (7th ed.)

Hamann, R., & Hermand, J. (1960). Impressionismus. Akademie-Verlag.

Cita Chicago (17th ed.)

Hamann, Richard, i Jost Hermand. Impressionismus. Berlin: Akademie-Verlag, 1960.

Cita MLA (8th ed.)

Hamann, Richard, i Jost Hermand. Impressionismus. Akademie-Verlag, 1960.