Abramov, A., & Abramov, S. (1969). Horsemen from nowhere. Mir.
Cita Chicago (17th ed.)Abramov, Aleksandr, i Sergei Abramov. Horsemen from Nowhere. Moscow: Mir, 1969.
Cita MLA (9th ed.)Abramov, Aleksandr, i Sergei Abramov. Horsemen from Nowhere. Mir, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.