edited by Ulli Beier
University of Queensland Press, 1980
Buku Teks
Flowers, T. H.
John Wiley & Sons, 1976
Buku Teks
Ovezon, B.
Turkmenistan Pub. House, 1967.
Buku Teks
Sari Pietikainen ... [and others]
Cambridge University Press, 2016
Buku Teks
Cousins, Matthew, author
Taylor and Francis, 2009
Buku Teks