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Australian Council for Educational Research, 1968
Buku Teks
Melia Fauziah, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2002
UI - Tesis (Membership)
Praetz, Helen Margaret
Melbourne Melbourne University Press , 1980
Buku Teks
Kim, Tog-yong, 1958-
Inmul kwa Sasangsa, 2007
Buku Teks
Anderson, Vernon E.
The Ronald Press, 1962
Buku Teks