Hoel, Paul Gerhard, 1905-, author
Wiley, 1982
Buku Teks
Gravetter, Frederick J., author
Wadsworth and Cengage Learning, 2013
Buku Teks
Dawn, Hawkins
Oxford University Press, 2009
Buku Teks
Allyn and Bacon, 1993
Buku Teks
Neter, John, author
Allyn and Bacon, 1993
Buku Teks