Cite

Official map of El Paso, Texas / Juan S. Hart, city engineer.

MLA

Hart, Juan S. Official Map of El Paso, Texas / Juan S. Hart, City Engineer. s.n., 1911. https://collections.library.yale.edu/catalog/15827527.

APA, 6th edition

Hart, J. S. (1911). Official map of El Paso, Texas / Juan S. Hart, city engineer. [Cadastral maps]. s.n., https://collections.library.yale.edu/catalog/15827527.