APA (7th ed.) Citation

Fries, H. d. (1920). Raum und Form. https://doi.org/10.11588/diglit.10458.6

Chicago Style (17th ed.) Citation

Fries, Heinrich de. Raum Und Form. 1920. https://doi.org/10.11588/diglit.10458.6.

MLA (9th ed.) Citation

Fries, Heinrich de. Raum Und Form. 1920. https://doi.org/10.11588/diglit.10458.6.

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