WHO collaborating centres : General information
WHO, 2001
Buku Teks SO
Annual report 1973 The Population Concil
New York, N,Y, The Population Concil 1973,
Buku Teks
The new realities of the business cycle: 53rd annual report September 1973
National Bureau of Economic Research , 1973
Buku Teks SO
Unisco bulletin for Libraries
Paris : Unisco
Majalah, Jurnal, Buletin
March, James G.
Organizations
Wiley, 1950
Buku Teks