APA

I͡Akobson, L. (1941). Leonid Yakobson collection.

MLA

I͡Akobson, Leonid. Leonid Yakobson Collection. , 1941. Archival material.

CHICAGO

I͡Akobson, Leonid. 1941. Leonid Yakobson collection.

HARVARD

I͡AKOBSON, L. (1941). Leonid Yakobson collection.

TURABIAN

I͡Akobson, Leonid. Leonid Yakobson Collection. 1941.