(1984). Nadezhda Krandievskaya and Alexei Tolstoi.
Cita Chicago (17th ed.)Nadezhda Krandievskaya and Alexei Tolstoi. 1984.
Cita MLA (9th ed.)Nadezhda Krandievskaya and Alexei Tolstoi. 1984.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)