MLA

Przhevalʹskiĭ, Nikolaĭ Mikhaĭlovich, 1839-1888. Mongolīi︠a︡ i strana tangutov : Trekhli︠e︡tnee puteshestvīe v Vostochnoĭ Nagornoĭ Azii. 1875-1876.. https://collections.library.yale.edu/catalog/30646797.

APA, 6th edition

Przhevalʹskiĭ, Nikolaĭ Mikhaĭlovich, 1839-1888. (1875-1876.)[Mongolīi︠a︡ i strana tangutov : Trekhli︠e︡tnee puteshestvīe v Vostochnoĭ Nagornoĭ Azii]. https://collections.library.yale.edu/catalog/30646797.