Griffin, Ricky W., author
Pearson Education International, 2006
Buku Teks
Griffin, Ricky W., author
Prentice-Hall, 1999
Buku Teks
Griffin, Ricky W., author
Prentice-Hall, 2002
Buku Teks
Wheeler, Bayard O.
Harper & Row. Publisher, 1968
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Lind, Douglas A., author
McGraw-Hill-Irwin, 2010
Buku Teks