Armstrong, David, 1960-, author
Macmillan, 1983
Buku Teks
Karol, Nathaniel H.
John Wiley & Sons, 1980
Buku Teks
Levine, Daniel U.
Allyn and Bacon, 1992
Buku Teks
Havighurst, Robert J.
Allyn and Bacon, Inc, 1973
Buku Teks
Tuqan, Mustafa Izzat
The Hague Centre for the Study of Education in Changing societics, 1975
Buku Teks