Cite

Fifty thousand miles of national highways proposed by the National Highways Association / published under direction of the National Highways Association ; John C. Mulford, cartographer.

MLA

Association, National Highways. Fifty Thousand Miles of National Highways Proposed by the National Highways Association / Published under Direction of the National Highways Association ; John C. Mulford, Cartographer. National Highways Association, 0AD. https://collections.library.yale.edu/catalog/15827819.

APA, 6th edition

Association, N. H. (0 C.E.). Fifty thousand miles of national highways proposed by the National Highways Association / published under direction of the National Highways Association ; John C. Mulford, cartographer. [Maps]. National Highways Association, https://collections.library.yale.edu/catalog/15827819.