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.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.