(1998). Metamorphosis International: Center of education for slow learners. Manila Bulletin.
Chicago Style aipamena"Metamorphosis International: Center of Education for Slow Learners." Manila Bulletin 1998.
MLA aipamena"Metamorphosis International: Center of Education for Slow Learners." Manila Bulletin, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.