Bodnar, George H., author
Prentice Hall International, 1998
Buku Teks
Wu, Frederick H.
McGraw-Hil Book Company, 1983
Buku Teks
Page, John R., 1949-, author
Prentice Hall International, 1992
Buku Teks
Romney, Marshall B., author
Pearson Education, 2015
Buku Teks
Romney, Marshall B., author
Pearson Education, 2015
Buku Teks