MLA

Akhmatova, Anna Andreevna, 1889-1966. [Poema bez geroe, Poeme sans heros: typescript, corrected, signed, in Russian [p. 32 of typescript poem, signed by A. Akhmatova]. [1942]. https://collections.library.yale.edu/catalog/2004303.

APA, 6th edition

Akhmatova, Anna Andreevna, 1889-1966. ([1942])[[Poema bez geroe, Poeme sans heros: typescript, corrected, signed, in Russian [p. 32 of typescript poem, signed by A. Akhmatova]]. https://collections.library.yale.edu/catalog/2004303.