Hastad, Elis
Hansard Society for Parliamentary Government, 1957
Buku Teks
Lindstrom, Eric
Swedish Institute, 1982
Buku Teks
Elder, Neil C.M.
Pergamon Press , 1970
Buku Teks
Andersson, Ingvar
The Swedish Institue, [t.th.]
Buku Teks
Forum The Swedish Institute, 1960
Buku Teks