Kosolapov, V. (1976). Mankind and the year 2000. Progress.
Cita Chicago (17th ed.)Kosolapov, V. Mankind and the Year 2000. Moscow: Progress, 1976.
Cita MLA (9th ed.)Kosolapov, V. Mankind and the Year 2000. Progress, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.