MLA

Chudovskiĭ Dmitriĭ Nikolaevich. Opisanie Russkikh Zemskikh Pochtovykh Marok Konvertov i banderoleĭ. I.N. Kushnerev, Kievskoe Otdi︠e︡lenie, 1888. https://collections.library.yale.edu/catalog/31675800.

APA, 6th edition

Chudovskiĭ Dmitriĭ Nikolaevich. (1888). Opisanie russkikh zemskikh pochtovykh marok konvertov i banderoleĭ. I.N. Kushnerev, Kievskoe Otdi︠e︡lenie. https://collections.library.yale.edu/catalog/31675800.