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McGraw-Hill, 1967
Buku Teks
Beal, Tim, author
London : pluto press, 2005
Buku Teks
Smith, Marilyn Z., author
Houghton-Mifflin, 1974
Buku Teks
Karabell. Zachary
Basic Books, 1998
Buku Teks
Department of Information Republic of Indonesia, 1974
Buku Teks