Weber, Olga S.
R. R. Bowker Co., 1967
Buku Teks
edited by Charles Wells Moulton
Gloucester, 1959
Buku Referensi
Institut Studi Arus Informasi (ISAI) , 1997
Buku Teks
Segre, Cesare
Muton, 1973
Buku Teks
Griffin, Dustin, author
Cambridge University Press, 2009
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