MLA

Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia). Otdi︠e︡lenīe russkago i︠a︡zyka i slovesnosti. Slovarʹ t︠s︡erkovno-slavi︠a︡nskago i russkago i︠a︡zyka. t.1-2. 1867-1868.. https://collections.library.yale.edu/catalog/31670986.

APA, 6th edition

Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia). Otdi︠e︡lenīe russkago i︠a︡zyka i slovesnosti. (["t.1-2"])(1867-1868.)[Slovarʹ t︠s︡erkovno-slavi︠a︡nskago i russkago i︠a︡zyka]. https://collections.library.yale.edu/catalog/31670986.