Valenteĭ, D. I. (1980). An outline theory of population. Progress Publishers.
Lua i Stíl Chicago (17ú heag.)Valenteĭ, D. I. An Outline Theory of Population. Moscow: Progress Publishers, 1980.
Lua MLA (9ú heag.)Valenteĭ, D. I. An Outline Theory of Population. Progress Publishers, 1980.
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