APA-referens (7:e uppl.)

Newman, P., & Allen, R. H. (1967). Population growth rates and economic development in Nicaragua, prepared for the government of Nicaragua and USAID Nicaragua. Robert R. Nathan Associates.

Chicago-referens (17:e uppl.)

Newman, Peter, och R. H. Allen. Population Growth Rates and Economic Development in Nicaragua, Prepared for the Government of Nicaragua and USAID Nicaragua. Washington, D. C: Robert R. Nathan Associates, 1967.

MLA-referens (9:e uppl.)

Newman, Peter, och R. H. Allen. Population Growth Rates and Economic Development in Nicaragua, Prepared for the Government of Nicaragua and USAID Nicaragua. Robert R. Nathan Associates, 1967.