Population, Resources, Environment and the Philippine Future, Development Academy of the Philippines, University of the Philippines (Diliman). School of Economics, & University of the Philippines (Manila). Population Institute. (1980). Probing our futures: The Philippines 2000 A.D. PREPF.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিPopulation, Resources, Environment and the Philippine Future, Development Academy of the Philippines, University of the Philippines (Diliman). School of Economics, এবং University of the Philippines (Manila). Population Institute. Probing Our Futures: The Philippines 2000 A.D. Metro Manila: PREPF, 1980.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিPopulation, Resources, Environment and the Philippine Future, et al. Probing Our Futures: The Philippines 2000 A.D. PREPF, 1980.