APA (7th ed.) Citation

Cohen-Portheim, P. (1920). Impressionismus und Expressionismus. https://doi.org/10.11588/diglit.27227.71

Chicago Style (17th ed.) Citation

Cohen-Portheim, Paul. Impressionismus Und Expressionismus. 1920. https://doi.org/10.11588/diglit.27227.71.

MLA (9th ed.) Citation

Cohen-Portheim, Paul. Impressionismus Und Expressionismus. 1920. https://doi.org/10.11588/diglit.27227.71.

Warning: These citations may not always be 100% accurate.