Taylor, John Keenan
Lewis Publishers, 1990
Buku Teks
Wasserman, Larry, author
Springer, 2010
Buku Teks
Sharon Anderson [and others]
John Wiley & Sons, 1980
Buku Teks
Snedecor, George W., author
The Iowa State University Press, 1964
Buku Teks
Mood, Alexander McFarlane, 1913-, author
McGraw-Hill , 1974
Buku Teks