Nguyen-Truong
Regional Institute of Higher Education and Development , 1974
Buku Teks
Roitburd, Lazar
Moscow, Foreign Languages Pub.
Buku Teks
Avramovic, Dragoslav, author
John Hopkins Press, 1972
Buku Teks
Schramm, Wilbur, author
Stanford University Press , 1964
Buku Teks
Tuqan, Mustafa Izzat
The Hague Centre for the Study of Education in Changing societics, 1975
Buku Teks