Cita APA (7th ed.)

Mandelstam, O., & Heinrichs, S. (1975). Briefe an Nadeshda.

Cita Chicago (17th ed.)

Mandelstam, Ossip, i Siegfried Heinrichs. Briefe an Nadeshda. Frankfurt am Main, 1975.

Cita MLA (8th ed.)

Mandelstam, Ossip, i Siegfried Heinrichs. Briefe an Nadeshda. 1975.