MLA

Geological and Geographical Survey of the Territories (U.S.). Sketch showing the primary and secondary triangulation of 1873 / Department of the Interior, U.S. Geological and Geographical Survey of the Territories, F.V. Hayden, U.S. Geologist in Charge ; primary triangulation by Jas. T. Gardner ; secondary triangula. BRBL_00590. 1873?]. https://collections.library.yale.edu/catalog/15818449.

APA, 6th edition

Geological and Geographical Survey of the Territories (U.S.). (["BRBL_00590"])(1873?])[Sketch showing the primary and secondary triangulation of 1873 / Department of the Interior, U.S. Geological and Geographical Survey of the Territories, F.V. Hayden, U.S. Geologist in Charge ; primary triangulation by Jas. T. Gardner ; secondary triangula]. https://collections.library.yale.edu/catalog/15818449.