Frindland, L
Foreign Languages Publishing House, 1956
Buku Teks SO
Ananyan, Vakhtang
Foreign Languages Publishing House, [date of publication not identified]
Buku Teks SO
Birket-Smith, Kaj
University of Wisconsin Press, 1965
Buku Teks SO
George, Vensus A.
Council for Research in Values and Philosophy, 2008
Buku Teks SO
Diakonoff, Igor M.
Cambridge University Press, 1999
Buku Teks SO