Smedt, Koenraad De, author
Springer, 2012
eBooks
Guo, Ruoxu, 1070-1075, author
American Council of Learned Societies,, 1951
Buku Teks
American Council of Learned Societies, 1951
Buku Teks
Pergamond Press, 1978
Buku Teks
Rolvaag, O.E., author
Harper & Row, 1965
Buku Teks