Artikel Jurnal
El-Agraa, Ali M, author
Prentice-Hall, 2001
Buku Teks
Baumol, William J., author
Harper & Brother Publisher, 1954
Buku Teks
Hendra Kristianto Hadi Saputra, author
2018
UI - Tesis Membership
Fakultas Teknik Universitas Indonesia, 2002
UI - Skripsi Membership