MLA

Berberova, N. (Nina), 1901-1993. Master copy, chapters 1-7 and "Biograficheskii spravochnik", typescript, corrected. Box 76, folder 1485-92. n.d.. https://collections.library.yale.edu/catalog/17305295.

APA, 6th edition

Berberova, N. (Nina), 1901-1993. (["Box 76, folder 1485-92"])(n.d.)[Master copy, chapters 1-7 and "Biograficheskii spravochnik", typescript, corrected]. https://collections.library.yale.edu/catalog/17305295.