Philippines (Republic). Bureau of the Census and Statistics. (1970). 1970 census of population and housing - Pampanga. [s.n.
芝加哥风格引文Philippines (Republic). Bureau of the Census and Statistics. 1970 Census of Population and Housing - Pampanga. Manila: [s.n, 1970.
MLA引文Philippines (Republic). Bureau of the Census and Statistics. 1970 Census of Population and Housing - Pampanga. [s.n, 1970.
警告：这些引文格式不一定是100％准确.