MLA

Aksakov, I. S. (Ivan Sergeevich), 1823-1886. Sochineniia, 1860-1886. t.6. 1886-87.. https://collections.library.yale.edu/catalog/31626694.

APA, 6th edition

Aksakov, I. S. (Ivan Sergeevich), 1823-1886. (["t.6"])(1886-87.)[Sochineniia, 1860-1886]. https://collections.library.yale.edu/catalog/31626694.