Cochran, William G.
John Wiley & Sons, 1957
Buku Teks SO
edited by David Harrington
Springer, 2012
eBooks
Campbell, Donald T.
Rand Mc Nally College Publisher, 1966
Buku Teks
Atkinson, A.C.
Clarendon Press, 1992
Buku Teks SO
Neter, John
Irwin, 1990
Buku Teks SO