edited by Colin J. Smithells and assistant editor, Eric A. Brandes
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Buku Teks
Bagchi, S. N.
Wiley Eastern, 1979
Buku Teks
edited by Edward H. Smith
Butterworth-Heinemann, 1995
Buku Teks
Artikel Jurnal
edited by L.S. Blake
Butterworth, 1994
Buku Referensi