Cite

Street map of Portland : [prepared for] Shell / by the H.M. Gousha Company.

MLA

Company, H. M. Gousha. Street Map of Portland : [Prepared for] Shell / by the H.M. Gousha Company. H.M. Goushá Company, 0AD. https://collections.library.yale.edu/catalog/15821593.

APA, 6th edition

Company, H. M. G. (0 C.E.). Street map of Portland : [prepared for] Shell / by the H.M. Gousha Company. [Maps]. H.M. Goushá Company, https://collections.library.yale.edu/catalog/15821593.