Wilkinson, Joseph W.
Erlangga , 1990
Buku Teks
Page, John R., 1949-
Prentice-Hall, 1987
Buku Teks
Hall, James A.
South-Western College , 2001
Buku Teks
Romney, Marshall B.
Pearson Education, 2009
Buku Teks
Romney, Marshall B.
Pearson Education, 2015
Buku Teks