University of the Philippines (Manila). Population Institute & Philippines. Commission on Population. (1972). Country statement: The Philippines.
芝加哥风格引文University of the Philippines (Manila). Population Institute 与 Philippines. Commission on Population. Country Statement: The Philippines. 1972.
MLA引文University of the Philippines (Manila). Population Institute 与 Philippines. Commission on Population. Country Statement: The Philippines. 1972.
警告：这些引文格式不一定是100％准确.