Tuqan, Mustafa Izzat
The Hague Centre for the Study of Education in Changing societics, 1975
Buku Teks
Raven, John
HK Lewis, 1977
Buku Teks
Illinois, 1962
Buku Teks
Pounds, Ralph L., author
Mamillan, 1965
Buku Teks
Murphy, Raymond, author
McGraw-Hill , 1979
Buku Teks