Cite

General map of China and adjacent regions showing treaty ports and railroads / prepared for the Department of State by the Topographic Branch, U.S. Geological Survey, 1921.

MLA

Geological Survey (U.S.). Topographic Branch. General map of China and adjacent regions showing treaty ports and railroads / prepared for the Department of State by the Topographic Branch, U.S. Geological Survey, 1921.. BRBL_00298. 1921. https://collections.library.yale.edu/catalog/15827213.

APA, 6th edition

Geological Survey (U.S.). Topographic Branch. (["BRBL_00298"])(1921)[General map of China and adjacent regions showing treaty ports and railroads / prepared for the Department of State by the Topographic Branch, U.S. Geological Survey, 1921.]. https://collections.library.yale.edu/catalog/15827213.