Bradley, Teresa
John Wiley & Sons, 2002
Buku Teks SO
Bradley, Teresa
West Sussex Wiley, 2013
Buku Teks SO
Arya, Jagdish C.
Prentice-Hall, 1981
Buku Teks SO
Bernardus Yuliarto Nugroho
Fakultas Ilmu Administrasi Universitas Indonesia, 2015
Buku Teks SO
Haeussler, Ernest F.
Reston Publishing, 1983
Buku Teks SO