Lipsky, Michael
Russell Sage Foundation, 2010
Buku Teks
Moughtin, Cliff, author
Butterworth-Heinemann, 1992
Buku Teks
Artikel Jurnal
Mastra, Riadika
Jakarta: Bhuana Ilmu Populer, 2001,
Buku Referensi
Karina Djati Suryo Prameswari, author
Fakultas Teknik Universitas Indonesia, 2012
UI - Skripsi (Open)