Blalock, Hubert M., author
Sage Publications, 1982
Buku Teks
Reading, Hugo F., author
Routledge & Kegan Paul, 1978
Buku Teks
Institute of Social Science, University of Tokyo,
Majalah, Jurnal, Buletin
Paris : Unesco
Majalah, Jurnal, Buletin
Korean Social Science Research Council, 2003
Majalah, Jurnal, Buletin