Friedman, G.(2009).The next 100 years : a forecast for the 21st century .New York:Penerbit Komisi Kerasulan Awam Konferensi Waligereja Indoesia.
MLA Style
Friedman, George."The next 100 years : a forecast for the 21st century".New York:Penerbit Komisi Kerasulan Awam Konferensi Waligereja Indoesia,2009.Text.