(1973). Population distribution and its projection, province of Isabela: The social and environmental impact of the Magat river project. Institute of Planning, University of the Philippines.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Population Distribution and Its Projection, Province of Isabela: The Social and Environmental Impact of the Magat River Project. Quezon City: Institute of Planning, University of the Philippines, 1973.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Population Distribution and Its Projection, Province of Isabela: The Social and Environmental Impact of the Magat River Project. Institute of Planning, University of the Philippines, 1973.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.