Philippine Information Agency. Media Studies Division. (1980). Philippine media factbook: Other facts and figures. Philippine Information Agency, Media Studies Staff in cooperation with the International Development Research Centre of Canada.
Citazione stile Chigago Style (17a edizione)Philippine Information Agency. Media Studies Division. Philippine Media Factbook: Other Facts and Figures. Quezon City: Philippine Information Agency, Media Studies Staff in cooperation with the International Development Research Centre of Canada, 1980.
Citatione MLA (9a ed.)Philippine Information Agency. Media Studies Division. Philippine Media Factbook: Other Facts and Figures. Philippine Information Agency, Media Studies Staff in cooperation with the International Development Research Centre of Canada, 1980.