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Buku Teks
Berney, Maurice
Angus and Robertson, 1965
Buku Teks
Princeton University Press, 1944
Buku Teks
Atkins, Ruth
John Wiley & Sons, 1980
Buku Teks
Mol, Hans, 1922-
Sydney: George Allen & Unwin, 1985.
Buku Teks