MLA

United States. Army. Engineer Base Topographic Battalion, 64th. Special air and gunnery target map [Rota Island] / prepared ... by 64th Engr. Top. Bn. USAFICPA.. BRBL_00023B. 1944. https://collections.library.yale.edu/catalog/15238558.

APA, 6th edition

United States. Army. Engineer Base Topographic Battalion, 64th. (["BRBL_00023B"])(1944)[Special air and gunnery target map [Rota Island] / prepared ... by 64th Engr. Top. Bn. USAFICPA.]. https://collections.library.yale.edu/catalog/15238558.