Dull, Richard B.
South-Western Cengage Learning, 2012
Buku Teks
Wilkinson, Joseph W.
John Wiley & Sons, 1997
Buku Teks
Jones, Graham
McGraw-Hill, 1988
Buku Teks
Page, John R., 1949-
Prentice-Hall, 1987
Buku Teks
Romney, Marshall B.
Pearson Education, 2009
Buku Teks