Sharon Anderson [and others]
John Wiley & Sons, 1980
Buku Teks
Taylor, John Keenan
Lewis Publishers, 1990
Buku Teks
Wasserman, Larry, author
Springer, 2010
Buku Teks
Snedecor, George W., author
The Iowa State University Press, 1964
Buku Teks
Hoel, Paul Gerhard, 1905-, author
Hughton Mifflin, 1971
Buku Teks