MLA

Nizhnevolzhskīĭ i kamskīĭ Basseĭny i Priuralʹskīi︠a︡ Gubernīi. 1885. https://collections.library.yale.edu/catalog/15474800.

APA, 6th edition

Nizhnevolzhskīĭ i kamskīĭ Basseĭny i Priuralʹskīi︠a︡ Gubernīi. (1885). [Maps]. https://collections.library.yale.edu/catalog/15474800.