Botanicheskiĭ institut im. V.L. Komarova, Aleksandrova, V. D., & ︠I︡Urkovska︠i︡a, T. K. (1989). Geobotanicheskoe raĭonirovanie Nechernozemʹ︠i︡a Evropeĭskoĭ chasti RSFSR. "Nauka," Leningradskoe otd-nie.
Lua i Stíl Chicago (17ú heag.)Botanicheskiĭ institut im. V.L. Komarova, V. D. Aleksandrova, agus T. K. ︠I︡Urkovska︠i︡a. Geobotanicheskoe Raĭonirovanie Nechernozemʹ︠i︡a Evropeĭskoĭ Chasti RSFSR. Leningrad: "Nauka," Leningradskoe otd-nie, 1989.
Lua MLA (8ú heag.)Botanicheskiĭ institut im. V.L. Komarova, et al. Geobotanicheskoe Raĭonirovanie Nechernozemʹ︠i︡a Evropeĭskoĭ Chasti RSFSR. "Nauka," Leningradskoe otd-nie, 1989.
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