Zhilin, P. (1970). They sealed their own doom. Progress.
Cita Chicago (17th ed.)Zhilin, P. They Sealed Their Own Doom. Moscow: Progress, 1970.
Cita MLA (9th ed.)Zhilin, P. They Sealed Their Own Doom. Progress, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.