MLA

Pushkin, Aleksandr Sergeevich, 1799-1837. Sochinenīi︠a︡ A.S. Pushkina : izdanīe obshchestva dli︠a︡ posobīi︠a︡ nuzhdai︠u︡shchimsi︠a︡ literatoram i uchenym. t.6. 1887.. https://collections.library.yale.edu/catalog/31637534.

APA, 6th edition

Pushkin, Aleksandr Sergeevich, 1799-1837. (["t.6"])(1887.)[Sochinenīi︠a︡ A.S. Pushkina : izdanīe obshchestva dli︠a︡ posobīi︠a︡ nuzhdai︠u︡shchimsi︠a︡ literatoram i uchenym]. https://collections.library.yale.edu/catalog/31637534.