Dull, Richard B., author
South-Western Cengage Learning, 2012
Buku Teks
Romney, Marshall B., author
Pearson Education, 2009
Buku Teks
Bodnar, George H., author
Prentice Hall International, 1998
Buku Teks
Bodnar, George H., author
Prentice-Hall, 2001
Buku Teks
Romney, Marshall B., author
Prentice-Hall, 2003
Buku Teks