Berman, Donald H., author
Oceana Publications,Inc., 1972
Buku Teks
Population Institute, 1987
Majalah, Jurnal, Buletin
Universitas Indonesia, 2016
Buku Teks
Association for Computing Machinery
Society for Industrial and Applied Mathematics, 2005
eBooks
Teuku Mohammad Radhie, author
Yayasan Penelitian dan Pengembangan Hukum, 1976
Buku Teks