Levintow, D. (1961). Worker's education: Study guide. University of the Philippines, Asian Labor Education Center.
Citazione stile Chigago Style (17a edizione)Levintow, David. Worker's Education: Study Guide. Quezon City: University of the Philippines, Asian Labor Education Center, 1961.
Citatione MLA (9a ed.)Levintow, David. Worker's Education: Study Guide. University of the Philippines, Asian Labor Education Center, 1961.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.