Gensaya, F. G. (1967). Curricular changes in social studies in the Philippine elementary school from 1900 to 1960. s.n.].
Citazione stile Chigago Style (17a edizione)Gensaya, Felipe Gestosani. Curricular Changes in Social Studies in the Philippine Elementary School from 1900 to 1960. [Quezon City: s.n.], 1967.
Citatione MLA (9a ed.)Gensaya, Felipe Gestosani. Curricular Changes in Social Studies in the Philippine Elementary School from 1900 to 1960. s.n.], 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.