Hall, James A., author
South-Western College , 2001
Buku Teks
Romney, Marshall B., author
Pearson Education, 2018
Buku Teks
Martin, Mearle, author
Prentice-Hall, 2003
Buku Teks
Bodnar, George H., author
Prentice-Hall, 1998
Buku Referensi
Page, John R., 1949-, author
Prentice-Hall, 1987
Buku Teks