MLA

Russia. Glavnyĭ shtab. Voenno-topograficheskïĭ otdi︠e︡l. Zapiski Voenno-topograficheskïĭ otdi︠e︡la Glavnago shtaba ... 1841 / ch.6. ch.6 / 1841. 1837-. https://collections.library.yale.edu/catalog/31002944.

APA, 6th edition

Russia. Glavnyĭ shtab. Voenno-topograficheskïĭ otdi︠e︡l. (["ch.6 / 1841"])(1837-)[Zapiski Voenno-topograficheskïĭ otdi︠e︡la Glavnago shtaba ... 1841 / ch.6]. https://collections.library.yale.edu/catalog/31002944.