Blanchard, Benjamin S., author
Prentice-Hall, 1998
Buku Teks
Blanchard, Benjamin S., author
Pearson Education Limited, 2014
Buku Teks
Blanchard, Benjamin S., author
Prentice-Hall, 2006
Buku Teks
Kendall, Kenneth E., author
Prentice-Hall, 1992
Buku Teks
Hawryszkiewycz, Igor Titus, author
Prentice-Hall, 1994
Buku Teks