Ople, B. F. (1977). Nonformal education for development: A study of the effects of selected NMYC training programs. National Manpower and Youth Council.
Citazione stile Chigago Style (17a edizione)Ople, Bernardo F. Nonformal Education for Development: A Study of the Effects of Selected NMYC Training Programs. Quezon City: National Manpower and Youth Council, 1977.
Citatione MLA (9a ed.)Ople, Bernardo F. Nonformal Education for Development: A Study of the Effects of Selected NMYC Training Programs. National Manpower and Youth Council, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.