MLA

Pypin, Aleksandr Nikolaevich, 1833-1904. Istorīi︠a︡ russkoĭ ėtnografīi.. t.3-4. 1890-92.. https://collections.library.yale.edu/catalog/31666030.

APA, 6th edition

Pypin, Aleksandr Nikolaevich, 1833-1904. (["t.3-4"])(1890-92.)[Istorīi︠a︡ russkoĭ ėtnografīi.]. https://collections.library.yale.edu/catalog/31666030.