Kempthorne, Oscar
John Wiley & Sons, 1962
Buku Teks SO
Petersen, Roger G.
Marcel Dekker, 1985
Buku Teks SO
Das, M.N.
Wiley Eastern, 1979
Buku Teks SO
Dean, Angela
Springer, 1999
Buku Teks SO
John, Peter William Meredith
Society for Industrial and Applied Mathematics, 1998
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