Korea : The Korean Research Center
Majalah, Jurnal, Buletin
London : Institute of Race Ralations
Majalah, Jurnal, Buletin
Robinson, Philip, author
Rajawali, 1986
Buku Teks
Vierkandt, Alfred, 1867-1953, author
Stuttgart, Ferdinand Enke Verlag
Buku Referensi
Russell, Bertrand, 1872-1970, author
London George Allen & Unwin 1947
Buku Teks