Kovda, V. A. (1989). Problemy zashchity pochvennogo pokrova i biosfery planety. Nauch. ︠t︡sentr biologicheskikh issledovaniĭ AN SSSR v Pushchine.
Chicago Style (17th ed.) CitationKovda, Viktor Abramovich. Problemy Zashchity Pochvennogo Pokrova I Biosfery Planety. Pushchino: Nauch. ︠t︡sentr biologicheskikh issledovaniĭ AN SSSR v Pushchine, 1989.
Cita MLAKovda, Viktor Abramovich. Problemy Zashchity Pochvennogo Pokrova I Biosfery Planety. Nauch. ︠t︡sentr biologicheskikh issledovaniĭ AN SSSR v Pushchine, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.