Callan, Mary F., author
McGraw-Hill, 1991
Buku Teks
edited by David Alan Ehrlich ; based on a symposium in Geneva organized by the Henry Dunant Institute
Hans Huber, 1975
Buku Teks
Tolley, Keith, author
Routledge , 1995
Buku Teks
Akhtar, Shahid, author
International Development Research Centre, 1975
Buku Teks
Walsh, Diana Chapman, author
Springer-Verlag, 1977
Buku Teks