Salisbury, Harrison E.
Harper & Row, Pub., 1967
Buku Teks
Salisbury, Harrison E.
Harrison, 1969
Buku Teks
E. Aminudin Aziz
Indonesia University of Education. Faculty of Language and Art Education, 2005
Artikel Jurnal
Artikel Jurnal
Blackwell, 1993
Buku Teks