Buku Teks
Hisrich, Robert D.
McGraw-Hill, 2005
Buku Teks SO
Hisrich, Robert D.
McGraw-Hill, 2014
Buku Teks SO
Hisrich, Robert D.
McGraw-Hill Education, 2013
Buku Teks SO
edited by Calvin A. Kent, Donald L. Sexton and Karl H. Vesper
Prentice Hall, 1982
Buku Referensi