Cite

Map of Canals and Navigable Rivers in Belgium and The North of France.

MLA

Map of Canals and Navigable Rivers in Belgium and The North of France. Commission for Relief in Belgium, 1915. https://collections.library.yale.edu/catalog/15826830.

APA, 6th edition

Map of Canals and Navigable Rivers in Belgium and The North of France. (1915). [Maps]. Commission for Relief in Belgium, https://collections.library.yale.edu/catalog/15826830.