Bodnar, George H.
Prentice-Hall, 1998
Buku Referensi
Leitch, Robert A.
Prentice-Hall, 1983
Buku Teks
Romney, Marshall B.
Pearson Education, 2015
Buku Teks SO
Hall, James A., 1944-
Cengage Learning, 2016
Buku Teks SO
Hall, James A.
South-Western College , 2001
Buku Teks SO