Philippines (Commonwealth) Office of Adult Education & Philippines (Republic). Division of Adult Education. (1939). Philippine adult education series. Booklet no. 9- ([Tagalog language ed.].). Bureau of Print.
Citazione stile Chigago Style (17a edizione)Philippines (Commonwealth) Office of Adult Education e Philippines (Republic). Division of Adult Education. Philippine Adult Education Series. Booklet No. 9-. [Tagalog language ed.]. Manila: Bureau of Print, 1939.
Citatione MLA (9a ed.)Philippines (Commonwealth) Office of Adult Education e Philippines (Republic). Division of Adult Education. Philippine Adult Education Series. Booklet No. 9-. [Tagalog language ed.]. Bureau of Print, 1939.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.