Hampel, Clifford A.
Van Nostrand Reinhold, 1982
Buku Referensi
editor: Thomas P. Anderson, Robert W. Springer, Richard C. Warder, Jr.
Northwestern University, 1963
Buku Teks
Fergusson, J.E., author
Pergamon Press, 1982
Buku Teks
edited by Mihkel Koel
Taylor & Francis Group, 2009
Buku Teks
Califano, Salvatore , author
Springer, 2012
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