Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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