Cite

Champ de bataille de l'Yser = The Yser battlefield.

MLA

Champ De Bataille De l'Yser = The Yser Battlefield. C. Pieters, 0AD. https://collections.library.yale.edu/catalog/15352337.

APA, 6th edition

Champ de bataille de l'Yser = The Yser battlefield. (0 C.E.). [Maps]. C. Pieters, https://collections.library.yale.edu/catalog/15352337.