Schermerhorn, John R., author
Wiley , 2015
Buku Teks
RMIT University
Palgrave Macmillan, 2012
Buku Teks
Penner, Susan J., author
Lippincott Williams & Wilkins, 2004
Buku Teks
Schall, Lawrence D., author
McGraw-Hill 1982, 1982
Buku Teks
Lewellen, Wilbur G.
South-Western College Publishing, 2000
Buku Teks