Gillman, Peter, author
Aslib, 1984
Buku Teks
edited by H.H. Johnson, S.W.B. Newsom
Research Studies Press, 1977
Buku Teks
Asfahl, C. Ray, author
John Wiley & Sons, 1992
Buku Teks
Barwell, F.T., author
Pergamon Press, 1983
Buku Teks
Springer Cham, 2019
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