MLA

Russia. Glavnyĭ shtab. Voenno-topograficheskïĭ otdi︠e︡l. Zapiski Voenno-topograficheskïĭ otdi︠e︡la Glavnago shtaba ... 1840 / ch.4. ch.4 / 1840. 1837-. https://collections.library.yale.edu/catalog/31010029.

APA, 6th edition

Russia. Glavnyĭ shtab. Voenno-topograficheskïĭ otdi︠e︡l. (["ch.4 / 1840"])(1837-)[Zapiski Voenno-topograficheskïĭ otdi︠e︡la Glavnago shtaba ... 1840 / ch.4]. https://collections.library.yale.edu/catalog/31010029.