APA-referens (7:e uppl.)

Population, Resources, Environment, and the Philippine Futures (Organization). (1980). Probing our futures: The Philippines, 2000 A.D. PREPF.

Chicago-referens (17:e uppl.)

Population, Resources, Environment, and the Philippine Futures (Organization). Probing Our Futures: The Philippines, 2000 A.D. Metro Manila, Philippines: PREPF, 1980.

MLA-referens (9:e uppl.)

Population, Resources, Environment, and the Philippine Futures (Organization). Probing Our Futures: The Philippines, 2000 A.D. PREPF, 1980.